特別節目·中文精讀

塞巴斯蒂安·特龍:飛行汽車、自動駕駛與教育

Sebastian Thrun: Flying Cars, Autonomous Vehicles, and Education

斯坦福教授、谷歌自動駕駛專案發起者談飛行汽車、無人駕駛的落地與線上教育的變革。

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塞巴斯蒂安·特龍(Sebastian Thrun)說,他最不想要的就是一份自己擅長的工作。

這句話乍聽彆扭。一個連續推動三次技術革命的人,斯坦福終身教授、Google 自動駕駛專案創始人、Udacity 和 Kitty Hawk 的掌舵者,居然說自己刻意避開擅長的領域。他給出的理由很冷靜:如果你待在自己已經擅長的工作裡,學到新東西的機率會被壓到最低。

他去造飛行汽車的時候,對航空幾乎一竅不通。他做線上教育的時候,對教育行業同樣不熟。在他看來,這種“不懂”是資產,不是負債。

先把宇宙是不是模擬這件事放在一邊

訪談從《駭客帝國》開始。Lex Fridman 問他,我們是不是活在一場模擬裡。

特龍的回答是那種讓人愣一下的型別:“也許我們是,也許不是。但這跟我們應該怎麼行動,完全無關。”

宇宙是不是一臺資訊處理系統?毫無疑問。它是一個巨大的物理的、生物的、化學的計算機。但我活在這裡,活在此刻,我關心的是身邊的人。(塞巴斯蒂安·特龍)

他補了一句,說他不認為宇宙在“計算”什麼,沒有意圖,世界就是按它自己的方式演化,而這本身很美,他很感激自己能活著。

這個開場埋下了整場對話的基調。特龍不太吃那種懸浮在空中的宏大命題,他的興趣全部指向一個方向:一件事能不能讓具體的人過得更好。後面一個多小時聊自動駕駛、聊教育、聊飛行汽車,反覆回到的都是這個座標。

他寫的第一批程式,跑在一個德州儀器計算器上

回到八十年代初,特龍還是個在 TI-57 可程式設計計算器上寫程式的少年。他那時候在電視上看過一次矽谷,從此著了魔。

八十年代到九十年代,他研究智慧、研究人類,最著迷的是人工智慧。但那個年代的電腦太小了。他的原話是:那時候你能造出來的大腦,體積和複雜度都比不上一隻蟑螂。

他當時就想造一個“人造人”,最接近的辦法是造機器人。幾十年過去,他承認我們離那個目標還差得遠,今天的機器人依然非常脆弱。但從“建構”的角度去理解智慧,這條路他一直沒有偏離。

為什麼沒有人能寫下走路的規則

主持人問:造一個智慧系統,最核心的能力是什麼?

特龍的答案落在機器學習上,用一個例子說明:

每個人都會走路,我們在生命的頭一兩年就學會了。但至今沒有任何一位科學家,能把人類步態的規則完整寫下來。我們不知道怎麼描述它。我們可以練習,我們理解它,但我們無法把它講清楚,無法用語言傳給別人。(塞巴斯蒂安·特龍)

這就是傳統程式設計的死穴。計算機笨到極點,你必須為每一種可能情況預先寫好規則,而人類的知識絕大部分根本不在語言裡。人類大腦的多數部分處理的不是語言,是潛意識層面的、數值化的、感知性的東西,你自己都意識不到。

所以八十年代那波專家系統註定走不遠。它們的出發點是把專家的知識壓縮到一張紙上,再翻譯成機器可讀的規則。可“把大腳趾往前、腳跟往後、你就不會絆倒”這種規則,寫出來的永遠只是冰山露出水面的那一角。

機器學習的轉折點在於,計算機可以自己找規則了。它可以從跌倒和爬起裡學習,跟小孩學走路的方式一樣。

於是出現了人類程式設計永遠給不出的能力:一個系統可以觀察專家工作,無論對方是醫生還是律師,捕捉到其中的規律,然後做到跟最好的專家一樣好。放射科醫生、皮膚科醫生肩頭那些沒法用語言表達的手感,機器可以學。

寫程式碼的人為什麼這麼貴

特龍順口拋了個說法:軟體工程師之所以值錢,是因為把指令集寫對實在太難。這句是玩笑也是實話,傳統軟體的成本幾乎全部壓在“人要把規則想清楚”這一步上,所以你得為這件事付出高薪。

機器學習的意義在於把這一步的成本結構改掉。規則由機器自己從資料裡長出來,人只需要提供經驗。這是過去三四十年裡最重要的一次正規化轉移。

選問題的兩個標準

主持人問他,三次革命,怎麼選的問題。

特龍的答案只有兩條,說得很乾脆:

  • 第一,真的讓別人的生活變好。他說這話的時候自己都笑了,承認聽起來像口號,但他確實信。
  • 第二,必須能學到東西。所以他要待在“不擅長”的位置上。

他解釋第二條的邏輯:如果一份工作你已經很擅長,那麼從中學到有趣東西的機率會急劇下降。他在 Kitty Hawk 做電動垂直起降飛行器(eVTOL)的時候,對航空完全是門外漢,而這恰恰是他覺得最有意思的部分。

離開斯坦福教職之後,他挑問題的標準變得更直接:什麼對社會影響最大。

他把交通排在通訊前面。理由很具體:城市形態不一樣,工人不一樣,女性權利不一樣,這些都是交通塑造的。可今天的交通方案低效得離譜,每年死於交通事故的人大約一百二十萬,在很多國家是年輕人的頭號死因,資源利用效率極低。他讓人去任何一個普通社群數一數停著的車,說那是一種荒謬。

而解決方案在技術上已經存在了。用他的話說:你得閉上眼睛才能假裝看不見。

那輛車每三十英里就想自殺一次

2005 年 DARPA 沙漠挑戰賽,斯坦福的 Stanley 拿了冠軍。2007 年城市挑戰賽,Junior 拿了第二。這兩臺車點燃了整個自動駕駛行業。

主持人問他最難忘的經歷。特龍的第一個反應是“痛苦”兩個字,然後講了一個 bug。

有一段時間,Stanley 每跑三十英里就自殺一次,我們完全不知道為什麼。最後查出來,是兩個計算機時鐘在同步的時候,偶爾有一個時鐘往回跳,出現負的時間差,把整套內部邏輯全部搞亂了。這種 bug 找起來要花很久很久。(塞巴斯蒂安·特龍)

時鐘同步這個問題,到今天依然是機器人系統裡最煩人的一類故障。無人機、自動駕駛、任何有多個感測器的實時系統,都躲不開。

除了 bug,斯坦福的路線選擇也很關鍵。特龍的判斷是:車本身不用造,一臺租來的車就能跑完全程,人類駕駛員才是需要被替換的那部分。

他把人類駕駛員拆成三塊:感測器是眼睛和耳朵,大腦在中間,執行器是手和腳。感測器和執行器都好辦,缺的是大腦。而大腦是什麼?大腦是一臺學習機器。所以整個團隊的重心壓在機器學習上,速度控制直接模仿人類駕駛,同時讓車從自己的失誤裡恢復並學習。

比賽前一個月凍結程式碼

團隊只有四個人,為什麼是四個?因為五個人坐在一輛福特里不舒服。

特龍作為隊長,工作是買披薩、洗車、修壞掉的水箱、調系統。他說他們沒有任何來自官方的包袱,就想看看能走多遠。

真正讓他們贏的,是一件很少人做到的事:比賽前一個月,他們把整個軟體凍結了。

回頭看其他隊伍,每一支都在說“再給我一週我就能贏”。我們決定不掉進這個坑。提前完工,然後我們有一整個月去搖這個系統。最後一個月裡,我們真的找出了兩三個小 bug,必須修。(塞巴斯蒂安·特龍)

他觀察到,創新專案裡最常見的死法是:所有人都知道還剩一個沒找到的 bug,也都後悔沒時間修,可那個 bug 本身其實很容易修,只是沒人騰出手。

所以他專門建了一支測試團隊。一本一百六十頁的測試手冊,一條一條過。測試團隊天天在旁邊念:今天我們去測鐵路道口,明天彩排比賽的起點。

然後出現了一個典型場景。團隊覺得鐵路道口嘛,小菜一碟。去測了一下,發現效果很差。為什麼?系統把鐵軌認成了金屬護欄。

這就是他總結出的方法論:持續攻擊系統裡最弱的那一環。只要你一直把注意力放在最弱的地方,最終你會得到一個真正強大的系統。

多數管理者只是在搶功勞

聊到領導力,特龍先給了一句有點損的評價:

大多數管理者做的事,其實只是把別人的功勞據為己有。這很方便。(塞巴斯蒂安·特龍)

他解釋自己為什麼會有這種感慨。他骨子裡是工程師,小時候喜歡電腦,是因為你告訴它做什麼,它就真的做。凌晨一點爬起來開機,昨天寫的東西還在那兒等著執行,這感覺太爽了。

可這套邏輯放到人身上就行不通。你告訴別人做什麼,別人不做,還因此討厭你;或者今天做了,明天就停了。

問題就變成:怎麼把自己塞進人的腦子裡,而不是電腦的腦子裡。

他說如果人像電腦一樣笨,他反而不想跟這樣的人共事。人聰明、有情緒、有自尊、有抱負。多數工程師轉型做管理時失敗,就是因為以為可以用對待電腦的方式對待團隊。

他給出的解法來自教書那幾年。當教授最美妙的地方,是整天在“讓別人發光”。你的工作就是讓學生看起來很棒,你是個教練。

如果你把“讓學生髮光”這件事做到極致,他們會愛你,他們的父母會愛你,還會把一堆你根本不配得到的功勞算在你頭上。我在斯坦福那些發明,全是我學生做的,不是我的。(塞巴斯蒂安·特龍)

他補了一句觀察:他這輩子見過的人裡,幾乎沒有一個是懷著壞心眼的。每個人都想有貢獻,每個人都想幫別人。問題是,怎麼給人合適的框架,讓這份善意變成有效的行動。

最好的狀態是,他可以消失一個月,回來一切照常運轉。這很難做到,但做到的時候是種魔法。

我們用自己的意圖評判自己,用別人的行為評判別人

主持人接了一句,說“大多數人是好人”這句話很少聽到,很動人。

特龍引了他朋友的一句話:我們用自己的意圖評判自己,用別人的行為評判別人。

他提到矽谷的工程師,很多人共情能力極低,被這件事搞得一頭霧水。他認為最該練的技能,是把自己放到對方的位置上,然後聽。

他經常這樣對話:先說你乾得很好,我很喜歡;然後說,順便提一句,你剛才那個做法會產生這樣的效果,你意識到了嗎?對方通常會說,天哪,我完全不知道,我的本意是那樣的。

我就說,我相信你的本意,你是個好人。但為了你以後順利,如果你繼續那樣表達,別人只會討厭你。很多人回我:謝謝你告訴我,我的本意不是讓自己看起來像個傻子,我的本意是幫別人,我只是不知道怎麼做。(塞巴斯蒂安·特龍)

然後他提到了戴爾·卡內基的《人性的弱點》。他說那本書基本就是全部答案了,讀完照做就行。裡面寫的無非是:保持積極、記住別人的名字、微笑、練習共情。

他還講了一個判斷:那個你討厭、你覺得是白痴的人,如果你像對待自己一樣對待他,你會發現他只是一個在掙扎的人,本意不壞,可能需要幫忙。

主持人提到斯蒂芬·施瓦茨曼(黑石集團創始人)說過的話:你能做的最有價值的事之一,是聽別人說出他的問題,然後幫他解決這個問題。而令人驚訝的是,願意真正聽的人少之又少。

自動駕駛的 90%、99% 和最後那個 0.01%

話題回到技術上。

特龍把自動駕駛的難度曲線講得非常清楚:

造一臺能處理九成路況的自動駕駛車,太容易了。一個週末就能做到。做到 99%,大概一個月。但剩下的那 1%,意味著你每週還會發生一次致命事故,這完全不能接受。你繼續攻這 1%,其中 99% 仍然相對好辦,然後你被壓到了萬分之一,而這依然在安全上完全不能接受。(塞巴斯蒂安·特龍)

他因此對人類駕駛員充滿敬意。高速公路上的眼神交流、突然竄出來的鹿、爆胎,這些情況沒有人被專門訓練過,可人在緊急狀態下處理得相當成功。考慮到美國每年開出的里程數,駕駛能有今天這個安全水平,本身就非常了不起。

他覺得技術這一關已經過了。Waymo、Cruise 這些公司的車已經在限定場景裡基本無瑕疵地載人。去拉斯維加斯叫一輛 Lyft,如果 App 裡設定了正確的選項,來接你的可能是無人車,雖然車裡還坐著安全員。他說這些小毛病已經變得非常罕見。

下一步是三件事:把成本降下來、把車規級感測器硬化、把商業模式跑通。他強調最後一件最難。不是“我們有這個能力,人們就會買”,而是要讓人買得起,還要讓人接受。

還有一個門檻沒跨過去:至今沒有任何一支隊伍,敢讓車在完全沒人的情況下上路跑。這是下一個魔法時刻。

特斯拉和 Waymo 是兩種不同的賭注

主持人問得挺尖銳:Elon Musk 那一派更激進,Waymo 那一派更謹慎,哪種領導方式是對的?

特龍的回答先劃清立場:他不在任何一方的團隊裡,沒法核實。

然後他把問題抬到更高的層面:任何這個領域的創新者,都要面對一個根本矛盾,公共安全與創新衝動之間的平衡。他說這個國家做這件事已經成功了一百多年。航空每英里的安全性大約比地面交通高一百倍,原因不是運氣,是人們找到了一整套方法論,在保證公共安全的同時還能在噪聲、油耗這類關鍵指標上持續推進。

他舉了兩個例子說明我們處理危險技術的能力:核能、核武器。都做到了可控。

我們生活的世界比以往任何時候都安全。總會有意外,總有人會犯錯,總會有意料之外的失效。除了乾脆不做,我們永遠無法保證百分之百的絕對安全。但我為美國這段歷史感到驕傲。(塞巴斯蒂安·特龍)

兩種路線的差異,他自己是這麼看的:Waymo 那一派是直接跳到 L4、L5,靠模擬和安全員;特斯拉那一派是從 L2 起步,靠人類駕駛資料做機器學習,一點點往上爬。

他本人是特斯拉車主,每天用 Autopilot,說這技術確實讓他更安全,尤其是在高速上有點累的時候。他對這一點百分之百確定。

螞蟻覓食和兩條技術路線的對錯

特龍用螞蟻類比西方社會的技術路線之爭。

螞蟻出去覓食的時候,一部分往一個方向,一部分往另一個方向。如果所有人先開會討論哲學和智識問題,統一意見後再出發,一旦方向錯了,就浪費一天,回頭還得再討論一週。而分頭走的方案更好:總會有一支成功,回來宣佈勝利,然後所有螞蟻跟著那條路走。

這就是西方社會好的地方。不是陸地本位,不是中央本位,我們沒有蘇聯式的中央計劃告訴我們去哪兒覓食。我們就是去覓食。你拿著錢,出去試,誰知道誰會贏。(塞巴斯蒂安·特龍)

他自己也承認,兩種路線哪個對,現在沒人知道。

鐳射雷達是不是柺杖

Musk 說過一句很挑釁的話:鐳射雷達是柺杖。主持人把這話丟給了特龍。

他給了兩個回應。

第一,存在性證明是清楚的。人類開車沒有鐳射雷達,主要靠眼睛。也許還用到一點身體加速度的感覺,偶爾用到耳朵,跟鼻子肯定沒關係。所以從邏輯上講,攝像頭是充分的。他甚至說,如果給一個人裝一個零延遲的攝像頭,人類也能靠攝像頭開車。

第二,他喜歡西方世界有這麼多人在同時押不同的假設,這本身就是優勢。

沒有正面站隊,但他承認過去這十年最深刻的變化是深度學習。當年他在 Google 啟動自動駕駛專案時,Google Brain 同期也在做,深度學習已經在了,只是沒人把它當熱點。

從“用幾何感測器建立三維檢視、做幾何推理”轉向“我以前見過這個東西一萬次,它應該是什麼”,這是根本性的重心轉移。

車道線檢測:24 小時從零到商用水平

Udacity 的自動駕駛課程有超過兩萬人學過,他的說法是:世界上每一支自動駕駛團隊裡,都有他們的學生。

第一份作業是車道線檢測,就是從影象裡找出車道。

這件事人做起來毫不費力,瞟一眼就知道。但傳統做法要寫一堆離譜的規則:這一段是不是車道線?顏色對不對?太陽在不在?太陽出來的時候這塊是白的,這條線是直的,等等。而且你還得知道兩條車道線之間是六英尺還是十二英尺。

現在學生做的完全不一樣了。他們開一小時車,手工把車道線標出來,把這些當成樣本餵給機器,讓機器自己去找“車道線是什麼”的規則。24 小時之內,一個從來沒寫過相關程式的初學者,能寫出和最好的商用車道檢測一樣好的實現。這在我看來完全不可思議。(塞巴斯蒂安·特龍)

他說,用機器學習取得的進展,讓他十年前看到的任何東西都顯得渺小。

一門課怎麼值一千萬美元

特龍給主持人算了一筆賬,這筆賬很能說明那幾年人才市場發生了什麼。

那陣子有一批“收購式招聘”(acqui-hire):公司沒有產品、沒有業務,只有七十來號人,卻被高價買下,買的只是人。他拿 Cruise、Uber 這些案例反推,得出一個下限:一個自動駕駛工程師在那類收購裡的估值,至少一千萬美元。

他接著說,這意味著一個普通人在一年之內,靠學一門技能加上組隊創業,身價就能到一千萬美元。他想不出人生裡還有什麼別的路能做到這個。

Udacity 做自動駕駛奈米學位,邏輯也在這裡。他講了兩個洞察:

  • 傳統大學動不了。沒有“自動駕駛”這個系,機械、電子、計算機三個系的人湊到一個房間裡開會,難度極大。
  • 就算頂尖大學都開了課,所有名校加起來也就幾千個學生能上,因為名校極度挑剔。

他的問題很直接:印度的人呢?中國的人呢?中東、印尼、非洲的人呢?憑什麼被排除在造自動駕駛車的技能之外?他們比我們笨嗎?比我們少什麼特權嗎?

答案是:把技能給每一個人。如果這樣,世界上會出現一千家自動駕駛創業公司,哪怕只有 10% 成功,也有一百家,那就是一百個國家有更安全的自動駕駛車。

機器學習能做和不能做的事

特龍在這裡的措辭特別謹慎,因為他說這個領域“混淆太多”。

機器學習今天是什麼?它是一種技術,能遍歷大規模的、有重複模式的資料集,然後把模式找出來。僅此而已。(塞巴斯蒂安·特龍)

他舉了斯坦福兩年前做的一項研究。團隊做了一個超過十二萬九千張皮膚病變照片的資料集,每一張都有活檢結果作為金標準,裡面既有黑色素瘤、癌,也有皮疹和其他皮膚問題。然後讓神經網路去找模式。

結果是:用一部 iPhone 檢測皮膚癌,準確度和斯坦福最好的、有執業認證的皮膚科醫生相當。

然後他立刻補了一句:這東西在“識別皮膚癌”這一件事上很強,但它不會開車。

這就是今天的人工智慧和人類智慧的差別。人類能做很多很多種事,而且常常只需要極小的樣本;機器仍然需要非常大的、高度重複的資料集。

好在世界上絕大多數工作本身就是重複的,所以這項技術依然會重塑人類勞動。但它不是那種萬能通用智慧,離那個東西還非常遠。

他對“人工智慧”這個名字有點意見。好萊塢把這個詞和“人類被壓制、機器優越”綁在了一起,而他認為這在他有生之年不會發生,也不是個好主意。他看到的現實是一種非常聚焦的模式識別技術。

讓一個新手在第一天就成為專家

順著機器學習的邏輯,特龍給了一個整場訪談裡最有分量的推論。

任何領域成為專家大約需要一萬小時。醫生、律師、好司機,都要熬。而現在機器可以觀察專家、從專家身上抽取規則,然後把這種能力交給一個剛入行的新人。

想想這意味著什麼。如果給你看病的醫生才剛開始累積那一萬小時,他還不是專家。誰不希望給自己看病的,是世界上最好的專家?現在我們可以用機器,把人類醫生在決策上的錯誤和經驗不足直接抹掉,這可能救你的命。(塞巴斯蒂安·特龍)

他還講了一個真實故事。他有個朋友叫 Ben(化名),著名風投人,去看醫生。醫生看了看一顆痣,說應該沒事。出於某種有趣的原因,醫生掏出了手機,開啟他們研究專案的那個 App,App 說:不,這是黑色素瘤。

醫生謹慎起見做了活檢。結果回來,確實是黑色素瘤,隨後切除了。

特龍補了背景:黑色素瘤從零期到四期,可能不到一年。零期基本用菜刀切掉就沒事;四期意味著五年存活率低於 20%。

他還講了癌症為什麼可怕。很多癌症早期很容易治,問題在於早期沒有症狀。胰腺癌、膽囊癌的第一個症狀可能是頭痛,等你因為頭痛或背痛去看醫生、做了影像檢查,往往已經是四期以後,存活率掉到個位數。

所以他的設想是:讓人們能定期檢查自己的身體,哪怕只是在洗澡的時候,不需要醫生在場。他自己也承認這聽起來有點瘮人,但如果能做到,可能救下幾百萬條命。

十萬個獎學金和埃及的一千一百名高中生

關於“AI 會不會讓人失業”,特龍的回答是“擔心的人請來 Udacity”。

他給了幾個數字:超過 50% 的畢業生在結課後找到了新工作,學費上限大約一千五百美元。他們跟美國政府合作,推出了十萬個獎學金的計劃,覆蓋從入門級數字營銷到高階自動駕駛工程的課程。

他說這事跟白宮合作,是因為它跨黨派。想讓美國重新偉大,就必須對教育和技能保持主動。他還改寫了“美國夢”:過去是把孩子送進大學,現在得高效地把自己送進大學,擠晚上時間,什麼年齡都行。他們的學員年齡從 11 歲到 80 歲。

他去德國坐火車,鄰座的人就是他的學生。

Udacity 現在在某些國家幾乎成了預設選項,多數在中東。埃及剛結了一批:一千一百名高中生,程式設計能力達到了電腦科學本科生的水平,畢業率 95%。全部線上完成,難度不小。

他把願景說得很直白:教育應該是一項基本人權。不應該被鎖在象牙塔裡,只對有錢人開放,只對能靠父母行賄進系統的人開放,只對年輕人開放,只對特定人群、特定地區、甚至特定種族開放。

為什麼 Udacity 要開始教共情

主持人問他現在最興奮的課程是什麼。

他說是一個還沒上線的專案。Udacity 一直聚焦硬技能:程式設計、數學、工程、設計。但跟企業夥伴和學員聊下來,軟技能的需求非常普遍:怎麼在工作中行事,怎麼培養共情,怎麼在團隊裡協作,管理的基本功是什麼,怎麼做時間管理,怎麼在一個更大的共同體裡推進自己的職業生涯。

這些我們做得不好,Udacity 做得不好。而且大多數大學做得更差,因為我們太痴迷於個人考試分數,對團隊協作幾乎不投入注意力。我們教技術技能,學員會很強。但如果我們教共情,可能產生同樣的影響。(塞巴斯蒂安·特龍)

主持人開玩笑說這比自動駕駛還難。特龍不同意,他覺得規則其實很簡單,你只要真的想投入就行。他把問題歸到 K12 教育上:我們教孩子去拿最高的數學分,一個理性的人會順著推演出“數學最好、英語最好,就能成為最好的領導者”,但這是錯的。

他說,招一個數學很強的人很容易,你得證明自己;招一個有共情能力的人難得多。但我們生活在一個富裕社會里,每天都要跟別人打交道,這是美好之處,不是麻煩。練出這塊肌肉,在工作裡幫別人把事做成,人會非常成功。

38 分貝的飛行器

1903 年,萊特兄弟在 Kitty Hawk 完成人類第一次動力飛行。特龍的公司用了同一個名字。

他先糾正了一個說法:這些不是車,沒有輪子,更像直升機,垂直起飛、水平飛行。但有兩處關鍵不同。

第一,安靜得多。他們釋出的 Heaviside 專案飛行器,從你頭頂飛過的高度和直升機一樣,但你基本聽不見,大約 38 分貝,大致相當於圖書館裡的聲音。戶外環境噪音更高,就更聽不到了。

第二,便宜得多。直升機貴有很多原因,其中一個是單點失效太多。他講了一個詞:Jesus bolt,耶穌螺栓,就是旋翼和旋翼軸之間的那根螺栓。為什麼叫這個名字?因為它斷了你就死了,直升機上沒有第二個方案。

改成電驅動之後,一個大電機可以拆成很多個小電機。Heaviside 有八個旋翼,掉一個還剩七個,照樣起飛,跟之前一樣。

還有就是不需要商業飛行員。在他看來,空中飛行其實比地面交通更容易。地面世界滿是孩子、腳踏車、其他車、郵箱、路緣、灌木。飛過樓頂和樹線之上,那裡什麼都沒有。

你現在就可以做個測試,看看窗外,數一數天上有多少東西在飛。如果你能數出兩個以上,我會很驚訝,多半是零。在灣區我最多見過六七個,也許十五二十,但絕不會是一萬。天空非常遼闊、空曠、自由。(塞巴斯蒂安·特龍)

Heaviside 的指標:航程 100 英里,留 30% 電量儲備,最高時速約 180 英里。

按美國人口普查的資料推算,這種方案規模化之後,地面通勤速度會快十倍。每年花在路上的大幾百小時,可以壓縮到原來的十分之一左右。

他的原話是:誰不討厭堵車?給我找一個不討厭堵車的人出來。

把 101 高速垂直疊一百層要花多少錢

主持人問,未來會不會有成千上萬、甚至幾十萬架無人機和飛行汽車填滿天空。

特龍說必須相信這會發生。社會接受度是大問題,安全也是,但他認為安全可以參照商業航空已經走過的路。噪聲是關鍵,所以他們才死磕降噪。

他給了一個很妙的類比,說明天空為什麼和地面完全不同:

你想在舊金山把 101 高速變成一百條垂直車道。那你算算,把一百條車道物理疊在 101 上要花多少錢。那會花掉全球一整年的 GDP,就為了一條高速。但在天上,這些車道全是虛擬的,只是一段軟體。任何一輛車跟另一輛車有衝突,換個高度就完事了。(塞巴斯蒂安·特龍)

他說這不是想象,商業航空現在就是這麼執行的。從紐約飛舊金山,和從舊金山飛紐約,兩架飛機飛在不同高度,所以不會撞上。這個問題在噴氣機領域早就解決了,在城市空域也只是一個軟體問題。

至於空管,他覺得現在的模式過於古老。一個管制員同一頻率上最多管二十架飛機,所以可以靠語音對話。但如果空域裡有兩萬個目標,你沒法跟每個人說話。

解決方案是數字化,像發簡訊一樣。世界上有四五十億部智慧手機,全部聯網,全部能被定位,全部極其可靠。用的還是同一套邏輯:把空域座標數字化傳輸,而不是靠一個飛行員在對話中途被通知“換頻率”。這套系統天然能擴充套件到一萬架、十萬架。

他不希望你的冰箱愛上洗碗機

主持人問了一個更軟的問題:我們會不會造出一個人可以愛、也會愛回來的系統,像電影《她》那樣。

特龍的回答非常乾脆。他說自己是實用主義者,AI 就是工具,像一把鏟子。使用鏟子的倫理,永遠在使用鏟子的人身上。

我可不想走進廚房,發現冰箱把我的食物全弄壞了,然後跟我解釋它愛上了洗碗機,而洗碗機對它不夠好,所以它忽視了我。那就是一次糟糕的體驗,一個糟糕的產品,我不會把這種冰箱推薦給朋友。技術必須可靠、必須可預測。我要我的車能工作,我不想愛上我的車。(塞巴斯蒂安·特龍)

他接著說了一句整場訪談裡最漂亮的話:我要機器補足我,而不是替代我。

他的論證是:他今天已經是個“超人”了,靠的就是身邊的機器。

我今天可以在三萬六千英尺的高空、以接近音速橫跨大西洋,這挺神奇的。我現在說話,聲音能一路傳到澳大利亞,而且是光速,不是音速。音速要花好幾個小時,光速是瞬間。這讓我成為超人。我甚至會說,我的抽水馬桶也讓我成為超人。想想沒有抽水馬桶的年代,你可以問問家裡很年長的長輩,或者去一趟印度的農村體驗一下。(塞巴斯蒂安·特龍)

所以在他看來,“愛”和“同情”這些詞用在機器上沒什麼意思。他的興趣在人身上。

不過主持人追問得妙:那愛和同情在我們的工具裡,有沒有用處?

特龍在這裡鬆了一點口。他說愛是個美麗的人類概念,如果把愛拆開看,它是一種傳遞安全、傳遞信任的手段。而信任在技術裡同樣是剛需,不只是人與人之間才需要。人類互動中那些標準、感受、情緒,也許有基因的成分,也許是後天演化的,作用都是讓對方感受到信任、安全、熱情、投入、愛和專注,這些構成了人類社會的織物。

他說自己是個大粉絲:想被愛,想被信任,想被欣賞。但他不會把這一整套東西盲目複製到機器上。

會扇翅膀的人大多沒活下來

為什麼不該照抄自然?他給了一個特別有說服力的類比。

到 19 世紀末為止,幾乎所有的交通都靠腿,一條腿、兩條腿、一千條腿,你會自然得出結論:靠腿移動才是對的。唯一的例外是會扇翅膀的鳥。

事實上,航空史上有不少人真的在胳膊上綁了翅膀從懸崖上跳下去。他們大多沒能活下來。(塞巴斯蒂安·特龍)

而技術給出的答案完全不同。車輪在生物界極其罕見,生物體裡幾乎沒有持續旋轉的部件,可工程上造車輪太容易。車輪催生了汽車,同樣的旋轉原理也催生了航空:天上飛的東西,沒有一樣不帶旋轉部件的,噴氣發動機也好,直升機旋翼也好。

所以他認為,如果一個人真信了“農業革命的解決方案是一個人形機器人”,那到今天還在等。

他為什麼會笑

主持人最後問了一個關於人的問題:在這麼多混亂、這麼重的活裡,那種笑、那種幽默、那種輕盈是從哪兒來的?

我就是愛我的生活。我愛我身邊的人。我就是特別高興自己活著。我今年 52 歲,很多人說五十幾歲是個坎,我反而覺得越來越好。(塞巴斯蒂安·特龍)

他給的理由帶著一種歷史感。人類大概有三十萬年曆史,除了最近這一小段,預期壽命大概在三十歲上下。按那個標準,他早就該死了。

這讓我享受每一天,因為我不配得到這些。為什麼我生在這個年代,而我的那麼多祖先死於可怕的方式?饑荒,席捲歐洲上千年的戰爭,大部分在二戰之後才消失。那時候美國人和盟國做了一件了不起的事,交給了一個並不配得到這份禮物的國家。德國今天這麼好。(塞巴斯蒂安·特龍)

他說,如果能每天感受到這一點,那你會覺得我們能做成的事多到不可思議。我們生活的世界每天都在鉅變,你珍視的幾乎一切東西,智慧手機、抽水馬桶、新衣服、手錶、飛機、青黴素、麻醉手術,青黴素都是最近一百五十年才有的。

他把這一百五十年追溯到古騰堡和印刷機。資訊傳播效率一旦提高,接下來就是農業革命、氮肥、農業產出暴漲,人不用再困在農田裡,於是開始讀寫,於是出現了今天這些職業:飛行員、按摩師、軟體工程師。

那個救了二十億人、卻沒人記得名字的人

他推薦了一本書,史蒂芬·平克的《當下的啟蒙》(Enlightenment Now)。他說也許這是他唯一想推薦的一本書。

書裡有個問題:如果 20 世紀只允許留下一篇論文,那應該是哪一篇?平克的答案是弗裡茨·哈伯(Fritz Haber)關於合成氨的研究。特龍說他自己之前完全沒聽過這個名字。

哈伯的合成氨,加上更早的灌溉技術,讓農業用地的產出提高了大約 26 倍,也就是 2500%。

平克認為,這項發明今天養活了超過二十億人。二十億本來會死的人,因為這個人的工作而活著。想想這個影響對社會意味著什麼。(塞巴斯蒂安·特龍)

他說這就是他看世界的方式。活著本身就值得驚歎,而他很高興自己生在這之後,而不是之前。

訪談到這裡收尾。特龍最後留下的一句話,恰好是整場對話的方法論總結:

慶祝失敗和慶祝成功一樣重要。如果你能很好地慶祝失敗,如果你能說出“我試過了,我錯了,但我學到了東西”,你會發現自己不再恐懼。而恐懼消失的時候,你就能推動世界。(塞巴斯蒂安·特龍)

這場對話裡可以立刻用上的東西

特龍講的東西跨度很大,從斯坦福的車庫到埃及的高中課堂,但剝掉具體領域,剩下的是幾套可以直接搬走的做法。

  • 刻意挑一個你不擅長的問題。他的判斷標準是:如果這份工作你已經做得好,你從中學到新東西的機率會顯著下降。下次選專案的時候,問自己一句“我在這裡是專家還是新手”,答案如果是前者,慎重。
  • 提前一個月凍結。任何有硬截止時間的專案,把“完工”的日期定在截止日之前,然後把剩下那段時間全部用來搖晃系統。創新專案最常見的死法不是能力不夠,是所有人都知道還剩一個沒修的 bug,卻沒人騰出手。
  • 每天攻擊最弱的一環。不要平均用力。找出現在整套系統裡最脆的那一塊,修它,然後再找下一塊。這個方法在 Stanley 身上救過一次命(鐵軌被認成護欄),在任何工程團隊裡都通用。
  • 把“讓人發光”當成管理工作本身。教授的邏輯可以直接搬到帶團隊:你的產出不是你做的活,是你的學生、你的下屬看起來有多強。他們變強了,功勞會自動跑到你頭上,而且是你其實不太配得到的那部分。
  • 用“意圖 vs 行為”這個框架做反饋。先肯定對方的本意,再描述他行為的實際效果,最後問一句“你意識到了嗎”。特龍的說法是,幾乎所有人聽完都會說謝謝,因為他們本來就不想看起來像個傻子。
  • 別把機器學習當成萬能智慧。它今天做的事是:從大規模重複資料裡抽模式。判斷一個場景能不能用,就問兩個問題:資料量夠不夠大,模式夠不夠重複。皮膚癌影象夠,通用駕駛不夠。
  • 把技能當成可以外送的資產。一門課的價值不只是教會幾千個名校生,而是讓一百個國家的人都能造車。如果你的知識只在小圈子裡流動,它的槓桿率被嚴重低估了。
  • 聽見別人的問題,然後解決它。施瓦茨曼那句話值得抄下來貼在顯示器上:願意真正聽別人說自己在難什麼的人,少得驚人。而這幾乎是最省力的價值創造方式。
  • 給自己一個不恐懼的理由。特龍 52 歲還能笑得那麼開,不是因為順利,是因為他算過一筆賬:按人類歷史的平均值,他早該死了。這筆賬算清楚,很多焦慮會自動縮小。

最後補一句他反覆提到的框架,我覺得比任何技術細節都耐用:我們用自己的意圖評判自己,用別人的行為評判別人。把這句反過來用在自己身上,你會發現自己也有不少行為沒跟上意圖;用在別人身上,你會發現那些讓你惱火的人,多半隻是不知道怎麼做而已。

文稿由本站用語音識別模型(基於官方釋出音訊)機器轉寫,可能有識別錯誤,人名與數字請以音訊為準。
[00:00:00] The following is a conversation with Sebastian Thrun. He's one of the greatest roboticists, computer scientists and educators of our time. He led the development of the autonomous vehicles at Stanford that won 2005 Dorper Grand Challenge and placed second in the 2007 Dorper Urban Challenge. He then led the Google self-driving car program, which launched the self-driving car revolution. He taught the popular Stanford course on artificial intelligence in 2011, which was one of the first massive open online courses, or Mook's, as are commonly called. [00:00:35] That experience led him to co-found Udacity, an online education platform. If you haven't taken courses on it yet, I highly recommend their self-driving car program, for example, is excellent. He's also the CEO of Kittyhawk. A company working on building flying cars are more technically Evita's, which stands for electric vertical takeoff and landing aircraft. He has launched several revolutions and inspired millions of people. But also, as many know, he's just a really nice guy. [00:01:06] It was an honor and a pleasure to talk with him. This is the Artificial Intelligence podcast. If you enjoy subscribe, I need to give it five stars, an Apple podcast, follow it on Spotify, support on Patrón or simply connect with me on Twitter. Allex Friedman spelled F.R.. I'd imagine if you leave a review on Apple podcast or YouTube or Twitter, consider mentioning ideas, people topics you find interesting. It helps guide the future of this podcast. [00:01:35] But in general I just love comments with kindness and thoughtfulness in them. This podcast is a side project for me, as many people know, but I still put a lot of effort into it. So the positive words of support from an amazing community from you really help. I recently started doing ads at the end of the introduction. I'll do one or two minutes after introducing the episode and never any ads in the middle that can break the flow of the conversation. [00:02:01] I hope that works for you and doesn't hurt the listening experience. I provide timestamps for the start of the conversation that you can skip to, but it helps if you listen to the ad and support this podcast by trying out the product or service being advertised. The show is presented by Kashyap, the number one finance app in the App Store. I personally use cash out to send money to friends, but we can also use it to buy, sell and deposit Bitcoin in just seconds. [00:02:28] Cash also has a new investing feature. You can buy fractions of a stock, say, one dollars worth, no matter what the stock prices. Brokerage services are provided by cash up investing subsidiary of Square. And remember SIPC. I'm excited to be working with cash out to support one of my favorite organizations called First Best known for their first robotics and Lego competitions. They educate and inspire hundreds of thousands of students and over one hundred and ten countries and have a perfect rating. [00:02:57] And Charity Navigator, which means the donated money is used to maximum effectiveness. When you get cash out from the App Store or Google Play and use Scolex podcast, you'll get ten dollars in cash. I will also donate ten dollars. The first, which again is an organization that I've personally seen, inspire girls and boys to dream of engineering a better world. And now here's my conversation with Sebastian Thrun. You mentioned that The Matrix may be your favorite movie, so let's start with the crazy philosophical question. [00:03:48] Do you think we're living in a simulation? And in general, do you find the thought experiment interesting, defined simulation? [00:03:57] I would say maybe we are. We are not. But it's completely irrelevant to the way we should act. [00:04:03] But putting aside for a moment the fact that it might not have any impact on how we should act as human beings for people studying theoretical physics, these kinds of questions might be kind of interesting. Looking at the universe is an information processing system. [00:04:20] Universe is an information processing system with a huge physical, biological, chemical computer. There's no question. But I live here and now I care about people who care about us. [00:04:32] What do you think is trying to compute? I don't think there's an intention. I think it just the world evolves the way that evolves. And it's it's beautiful. It's unpredictable. And I am very grateful to be alive. [00:04:44] Spoken like a true human, which last time I checked there was or that, in fact, this whole conversation is just the Turing test to see if if indeed if indeed you are. [00:04:56] You've also said that one of the first programs of the first few programs you've written was a wait for it 57 calculator. [00:05:05] Yeah, maybe that's early eighties and on a date calculators in the early 80s, correct? [00:05:12] Yeah. So if you were to place yourself back into that time, into the mindset you were in, could you have predicted the evolution of computing, ie the Internet technology in the decades that followed? [00:05:27] I was super fascinated by Silicon Valley, which I've seen on television once, and thought, my God, this is so cool that built like divans there. And CPU's, how cool is that? And as a college students, a few years later, a few years later, I decided to study intelligence and study human beings and found that even back then in the 80s and 90s, that artificial intelligence is what fascinated me the most was missing is that back in the day, the computer is small. [00:05:54] They're like the brains you could build were not anywhere bigger as a cockroach. And Carcassonne, very smart. So we weren't at the scale yet where we are today. [00:06:02] Did you dream at that time to achieve the kind of scale we have today or did that's impossible. [00:06:09] I always wanted to make robots smart. I felt it was super cool to build an artificial human and the best way to build an artificial. You invent a robot because that's kind of the closest you could do. Unfortunately, we aren't there yet. The robots today are still very brittle, but it's fascinating to to study intelligence from a constructive perspective and build something to understand you build. [00:06:31] What do you think it takes to build an intelligent system and an intelligent robot? I think the biggest innovation that we've seen, this machine learning, and it's the idea that the computers can basically teach themselves. Let's give an example, I'd see everybody pretty much knows how to walk and we learn how to walk in the first year or two of our lives, but no scientist has ever been able to write down the rules of human gait. We don't understand that. [00:06:58] We can't behave in our brains. Somehow we can practice it. We understand it, but we can articulate it. We can't pass it on by language. And that, to me, is kind of the deficiency of today's computer programming problem, a computer that's so insanely dumb that you have to give them rules for every contingencies they unlike the way people learn from data and experience. Computers are being constructed. And because it's so hard to get this instruction set right, we software engineers to earn a thousand dollars a year. [00:07:27] Now, the most recent innovation, which is have been the make for like 30, 40 years, is an idea that computers can find their own rules so they can learn from falling down and getting up the same way children can learn from falling down and getting up. And that evolution has led to a capability that's completely unmatched. Today's computers can watch experts do their jobs, whether you're a doctor or a lawyer, pick up the regularities, learn those rules, and then become as good as the best experts. [00:07:55] So the dream of in the 80s of expert systems, for example, had at its core the idea that humans could boil down their expertise on a sheet of paper so as to reduce sort of be able to explain to machines how to do something explicitly. So do you think. [00:08:13] What's the use of human expertise into this whole picture? Do you think most of the intelligence will come from machines learning from experience without human expertise input? So the question for me is much more. How do you express expertise? You can express expertise by writing a book. You can express expertise by showing someone what you're doing, can express expertise by applying it by by many different ways. And I think the expert systems was our best attempt in the eye to capture expertise in rules where someone sat down and said, here, the rules of human gait. [00:08:45] Here's when you put your big toe forward and your huge backwards and you stop stumbling. [00:08:51] And as we now know, the set of rules, the set of language that you can command is incredibly limited. The majority of the human brain doesn't deal with language. It deals with subconscious numerical perceptual things if you don't even every self aware of. Now, when a system watches an expert do their job and practice their job, it can pick up things that people can't even put into writing into books or rules. And that's what the of power is. [00:09:21] We now have a system that, for example, look over the shoulders of highly paid human doctors like dermatologists or radiologists, and they can somehow pick up those skills that no one can express in words. So you were a key person in launching three revolutions, online education and autonomous vehicles and flying cars or Vitalis, so high level. And I apologize for the philosophical questions. No apology necessary. [00:09:53] How do you choose what problems to try and solve drives you to make those solutions a reality? [00:09:59] I have two two desires in life. I want to literally make the lives of others better or as you say, maybe jokingly make the world a better place. I believe in this, as funny as it sounds. And second, I want to learn I want to get in because I don't want to be in the job I'm good at, because if I'm in a job that I'm good at, the chance for me to learn something interesting is actually minimized. [00:10:23] So I want to be in a job and bad. It was really important to me. So in a bill, for example, what people often called flying cars is the electrical vertical takeoff and landing vehicles. I'm just no expert in any of this. And it's so much fun to to learn on the job what it actually means to build something like this. I'd say that the stuff that I've done lately after I finished my professorship at Stanford, they really focused on like what has the maximum impact on society, like transportation as something has transformed the 21st, 20th century more than any other invention, in my opinion, even more than communication. [00:10:59] And cities are different workers. Different women's rights are different because of transportation. And yet we still have a very suboptimal transportation solution where we kill one point two or so million people every year in traffic. It's the leading cause of death for young people in many countries where we are extremely inefficient resource wise. Just go to your average neighborhood city and look at the number of parked cars. That's a travesty, in my opinion. Or we spend endless hours in traffic jams and very, very simple innovations like a self-driving car or what people call a flying car could completely change this. [00:11:36] And it's there. I mean, the technology is basically there to close your eyes, not to see it. So lingering on autonomous vehicles, a fascinating space, some incredible work you've done throughout your career there. So let's start with dorper. I think the diaper challenge, the desert and urban to the streets, I think that inspired an entire generation of roboticists and obviously sprung this whole excitement about this particular kind of four wheeled robots who called autonomous cars self-driving cars. [00:12:12] So you were the development of Stanly, the autonomous car, the one that the rest of the desert, the diaper challenge in 2005. And Junior, the car, the finished second in the Dopp Urban Challenge also did incredibly well in 2007. I think what are some painful, inspiring or enlightening experiences from that time that stand out to you? [00:12:37] Oh, my God. Painful were all these incredibly complicated, stupid bugs that had to be found. [00:12:46] We had a phase where the Stanley, our our car eventually won the upper end challenge. Would every 30 miles just commit suicide? And we didn't know why. And it ended up to be that in the sinking of two computer clocks, occasionally a clock went backwards and that negative time elapsed, screwed up the entire internal logic. But it took ages to find us like bugs like that, I'd say. And lightning is the same for team immediately focused on machine learning and then software, which everybody else seemed to focus on building better hardware. [00:13:21] Our numbers had been a human being, but an existing rental car can perfectly drive the course. I have to write off to build a better rental car. I just replace the human being. And the human being to me was a conjunction of three steps. We had sensors, eyes and ears, most eyes. We had brains in the middle and then we had actuate as our hands and our feet. Now the actors that used to build the sensors actually also easy to build. [00:13:46] What was missing was the brain. So we had to build a human brain. And nothing, nothing clearer than to me that that the human brain is a learning machine. So we don't just train our robots so that we would be a massive machine learning into our machine. And with that, we're able to not just learn from human drivers. We had the entire speed control of the vehicle was copied from human driving, but also have the robot learn from experience. [00:14:08] It made a mistake and could recover from it and learn from it. [00:14:12] You mentioned the pain point of software and clocks. Synchronization seems to seems to be a problem that continues with robotics. It's a tricky one with drones and so on. [00:14:26] What what does it take to build the thing? [00:14:29] A system with so many constraints? You have a deadline, no time. You're unsure about anything, really the first time that people really even explain. Yeah, it's not even sure that anybody can finish when we're talking about the race, the desert, the year before, nobody finished. What does it take to scramble and finish a product that actually a system that actually works? [00:14:52] I mean, very lucky, a very small team, the core of the team of four people. It was four because five couldn't comfortably sit inside a car at Fort Hood. [00:15:01] And I as a team leader, my job was to get pizza for everybody and wash the car and stuff like this and repair the radiator. And it broke and debug the system. And we were kind of open minded. We had no U.S. involvement. We just wanted to see how far we can get. [00:15:17] What we did really, really well. [00:15:18] It was time management. We were done with everything a month before the race and we froze the entire software a month before the race. And it turned out, looking at other teams every other team complained of, they had just one more week they would have won. And we decided to kind of fall into that mistake. You're going to be early. And we had an entire month to shake the system. And we actually found two or three minor bugs in the last month that we had to fix. [00:15:43] And we were completely prepared and the race occurred. [00:15:46] OK, so first of all, that's such an incredibly rare achievement in terms of being able to be done on time or ahead of time. [00:15:55] What do you how do you do that in your future work? What advice do you have in general? Because it seems to be so rare, especially in highly innovative projects like this. People work to the last second where the nice thing about the topic and challenges that the problem was incredibly well-defined. We were able for a while to drive the old topic and challenge course, which had been used the year before, and then some reason we were kicked out of the region. [00:16:20] So we had to go to a different desert, the Sonoran Desert, and maybe to drive Desert Trails just as the same type. So there was never any debate about like what is actually the problem. We didn't sit down and say, hey, should we build a car or a plane? We had to build a car that made it very, very easy. Then I studied my own life and life of others and realized that the typical mistake that. [00:16:42] Is there's this kind of crazy bug left that they haven't found yet, and and it's just they regret it and the bag would have been trivial to fix it, just haven't fixed it yet. And they didn't want to fall into that trap. So I built a testing team. We had a testing in a beta testing booklet of 160 pages of tests we had to go through just to make sure we shake the system appropriately. Wow. And the testing team was with us all the time and dictated to us today. [00:17:09] We do railroad crossings tomorrow. Do we practice the start of the event? And in all of these, we we thought, oh, my God, as long solve trivial. And then we tested it out. Oh, my God, it doesn't work very well for us. Why not? Oh, my God. It mistakes the the rails for metal barriers. We have to fix this. Yes. So it was a continuous focus on improving the weakest part of the system. [00:17:32] And as long as you you focus on improving the weakest part of the system, you eventually build a really great system. [00:17:39] Let me just pause on that. To me, as an engineer is just super exciting that you're thinking like that, especially at that stage as brilliant the testing with such a core part of it. It may be to linger on the point of leadership. I think it's one of the first times you were really a leader and you've led many very successful teams since then. What does it take to be a good leader? I would say most of them just take credit for the work of others, right? [00:18:11] That's that's very convenient and not because I can do all these things myself. I'm an engineer at heart, so I, I care about engineering, so so I don't know what the chicken or the egg is, but as a kid, I love computers because you could tell them to do something and they actually did. It was very cool. And you could like in the middle of a night, wake up at 1:00 in the morning and switch on your computer. [00:18:31] And what he told you to yesterday, I would still do that was really cool. Unfortunately, that didn't quite work with people. So you go to people and tell them what to do and they don't do it and they hate you for it, or you do it today and then you go a day later and they stop doing it. So you have to. So then a question really became, how can you put yourself in the brain of the people, of people as opposed to computers? [00:18:51] And it is a computer dumb then that's so dumb. If people were as dumb as computers, I wouldn't want to work with them. But people are smart and people are emotional and people have pride and people have aspirations. So how can I connect to that? And that's the thing where most of our leadership just fails because many, many engineers turn management believe they can treat their team just the same way with a computer. And it just doesn't work that way. [00:19:16] It's just really bad. [00:19:18] So how how can I how can to connect to people? And it turns out as a college professor, the wonderful thing you do all the time is to empower other people, like your job is to make your students look great. That's all you do. You're the best coach. And it turns out if you do a fantastic job with making your students look great, they actually love you and their parents love you and they give you all the credit for stuff you don't deserve. [00:19:42] All my students were smarter than me. All the great stuff invented at Stanford because of the stuff, not my stuff. And they give me credit and say, Oh, Sebastian, but just making them feel good about themselves. So the question really is, can you take a team of people and what does it take to make them to connect to what they actually want in life and turn this into productive action? It turns out every human being that I know has incredibly good intentions. [00:20:06] I've really never really met a person with bad intentions. I believe every person wants to contribute. I think every person I've met wants to help others. It's amazing how much of a burden we have not to just help ourselves, but to help others. So how can we empower people and give them the right framework that they can accomplish this? If in moments when it works, it's magical because you'd see the confluence of of people being able to make the world a better place and having enormous confidence and pride out of this. [00:20:39] And that's when when my environment was the best. These are moments where I can disappear for a month and come back and things still work. It's very hard to accomplish, but when it works, it's amazing. [00:20:51] So I agree with you very much. It's not often heard that most people in the world have good intentions. At the core, their intentions are good and they're good people. That's a beautiful message. It's not often heard. We make this mistake and this is a friend of mine, a topless. That we judge ourselves by our intentions in others, by their actions. And I think the biggest skill, I mean here in Silicon Valley with fellow engineers who have very little empathy and kind of befuddled by it, doesn't work for them. [00:21:25] The biggest skill, I think, that that people should acquire is to put themselves into the position of the other and listen and listen to what the other has to say. And they'll be shocked how similar they are to themselves. And there might even be shocked how their own actions don't reflect their intentions. I often have conversations with engineers, say, look, I love you doing a great job. And by the way, what you just did has the following effect. [00:21:53] Are you aware of that? And then people would say, oh, my God, not I wasn't, because my intention was that. And I said, yeah, I trust your intention. You're a good human being. But just to help you in the future, if you keep expressing it that way, then people just hate you. And I've had many instances to say, oh, my God, thank you for telling me this, because it wasn't my intention to look like an idiot. [00:22:15] It was my intention to help other people. I just didn't know how to do it. [00:22:19] Very simply. By the way, there's no Carnegie really 36 how to make friends and how to influence others has the entire Bible. You've just read it and you're done and you apply it every day. And I wish I could. I was good enough to apply it every day. But it says simple things, right? Like be positive. Remember, people's names smile and eventually have empathy. I really think that the person that you hate and you think is an idiot is if you just like yourself, it's a person who's struggling, who means well and who might need help. [00:22:50] And guess what? [00:22:51] You need help of recent book with Stephen Schwarzman. I'm not sure if you know who that is, but do so. And he said, I'm a list list. [00:23:03] But he he said sort of to expand on what you're saying, that one of the biggest things you can do is hear people when they tell you what their problem is and then help them with their problem. [00:23:18] He says it's surprising how few people actually listen to what troubles others. [00:23:25] Yeah, and because it's right there in front of you and you can benefit the world the most and in fact, yourself and everybody around you by just hearing the problems and solving them. I mean, that's my my little history of of engineering. That is what I was engineering with computers. I didn't care at all what the computer problems were. I just told them what to do and to do it. And it just doesn't work. It doesn't work with me. [00:23:55] If you come to me and say, do do a I do the opposite, but let's return to the comfortable world of engineering. [00:24:03] And can you can you tell me in broad strokes in how you see it? Because you're the core of starting at the core of driving it, the technical evolution of autonomous vehicles from the first star program challenge to the incredible success we see with the program. You started with Google self-driving car and way more than the entire industry that's sprung up of different kinds of approaches, debates and so on. [00:24:27] When the idea of self-driving car goes back to the eighties, there was a team in Germany, another team at Carnegie Mellon that did some very pioneering work. But back in the day, I'd say the computers were so efficient that even the best professors and engineers in the world basically stood no chance and then folded into a phase where the US government spent at least half a billion dollars that I could count on research projects. But the way the procurement works, a successful stack of paper describing lots of stuff that no one's ever going to read was a successful product of a research project. [00:25:04] So so we trained our researchers to produce lots of paper. [00:25:09] That all changed with the topic. And I really got to credit the ingenious people at the opera in the US government and Congress that took a complete new funding model where they said, let's not fund effort, let's fund outcomes. And it sounds very trivial, but there was no tax code that allowed the use of congressional tax money for a price. It was all effort. So if you put in a hundred thousand, you could charge a hundred hours, you put in a thousand dollars, and you could build a thousand dollars by changing the focus and really making the price. [00:25:39] We don't pay you for development. You pay for the accomplishment they drew in. They automatically drew out all these contractors who are used to the drug of getting money power. And they drew in a whole bunch of new people. And these people are mostly crazy people. There were people who had a car and a computer and they wanted to make a million bucks. The million bucks plus the official prize money was then doubled. And they felt if I put my computer in my car and program it, I can be rich. [00:26:07] And it was so awesome. Like like half the teams there was a team. Surfer dudes, and they had like two surfboards on their vehicle and brought, like these fashion girl super cute girls like twin sisters, and you could tell these guys were not your common appendage who gets all these big multimillion dollar countries from the US government. And there was a great research. Universities moved in, I was very fortunate at Stanford that had just received tenure, so I couldn't figure out what to do, otherwise I would have done it. [00:26:41] And I had enough money to finance this thing. And I was able to attract a lot of money from from third parties. And even car companies moved in. [00:26:49] They kind of moved in very quietly because they were super scared to be embarrassed that their car would flip over. But Ford was there and Volkswagen was there and a few others and GM was there. So it kind of reset the entire landscape of people. And if you look at who's a big name in self-driving cars today, these were mostly people who participated in those challenges. [00:27:09] OK, that's incredible. Can you just comment quickly on your sense of lessons learned from that kind of funding model and the research that's going on in academia in terms of producing papers? Is there something to be learned and scaled up bigger these having these kinds of grand challenges that could improve outcomes? [00:27:31] So I'm a big believer in and focusing on kind of an end to end system. I'm a really big believer in systems building. I've always built systems for my academic career, even though I do a lot of math and and abstract stuff. But it's all derived from the idea of let's solve your problem. And it's very hard for me to be an academic and say, let me solve a component of a problem. Like with someone, there's feels like nonmonetary logic or planning systems where people believe that a certain state of problem solving is the ultimate and objective. [00:28:03] And and I would always turn around and say, hey, what problem would my grandmother care about that doesn't understand computer technology and doesn't want to understand how could I make her love what I do? Because only then do I have an impact on the world. I can easily impress my colleagues that that's that that is much easier. But impressing my grandmother is very, very hard. So I was always thought of if I can build a self-driving car and and my grandmother can use it even after she loses her driving privileges or children can use it or save maybe a million lives a year, there would be very impressive. [00:28:38] And there's so many problems like this, like there's a problem of curing cancer or live twice as long. Once the problem is defined. Of course, I can solve it in its entirety, like it takes sometimes tens of thousands of people to to find a solution. There's no way you can fund an army of 10000 at Stanford. So you've got to build a prototype that's been a meaningful prototype. And the number one challenge was beautiful because it taught me what this prototype had to do. [00:29:02] I didn't have to think about what it had to do. It has to do with the rules. [00:29:05] And it was really beautiful at its most beautiful. [00:29:08] You think what academia could aspire to is to build a prototype. That's the systems level that solves a gives you an inkling that this problem could be solved with this project. [00:29:20] That's all I want to emphasize what academia really is. And I think people misunderstand it. First and foremost, academia is a way to educate young people, first and foremost, a professor as an educator, no matter what ever you want a small suburban college or whether you are a Harvard or Stanford professor, that's not the way most people think of themselves in academia, because we have this kind of competition going on for citations and and publication. That's a measurable thing, but that is secondary to the primary purpose of educating people to think. [00:29:54] Now, in terms of research, most of the great science, the great research comes out of universities. You can trace almost everything back, including Google to universities. So there's nothing really fundamentally broken here. It's it's a good system. And I think America has the finest university system on the planet. We can talk about reach and how to reach people outside the system. It's a different topic, but the system itself is a good system. If I had one wish, I would say and be really great if there was more debate about what the great big problems are in society and focus on those. [00:30:35] And most of them are interdisciplinary. Unfortunately, it's very easy to to fall into a interdisciplinary viewpoint where your problem is dictated. But but your closest colleagues believe the problem is it's very hard to break out and say, well, there's an entire new field of problems. So give an example. Prior to me working on self-driving cars, I was a roboticist in a machine learning expert and I wrote books and robotics, something called probabilistic robotics. It's a very method driven kind of viewpoint of the world. [00:31:08] I build robots that acted in museums as tour guides that led children around it. It's something that at the time was moderately challenging. [00:31:16] When I started working on cars, several colleagues told me, Sebastian, you're destroying your career because in our field of robotics, cars are looked like as a gimmick and they're not expressive enough. They can only put the throttle and the brakes. There's no. Dexterity, there's no complexity, it's just too simple, and no one came to me and said, wow, if you solve that problem, you can save a million lives. And among all robotic problems that I've seen in my life, I would say the self-driving car transportation is the one who has the most hope for society. [00:31:48] So how can the robotics community wasn't all over the place and it was become because we focused on methods and solutions and not on problems. Like if you go around today and ask your grandmother what bugs you or what really makes you upset, I challenge any academic to do this and then realize how far your research is probably away from that today. [00:32:11] At the very least, that's a good thing for academics to deliberate on. [00:32:15] The other thing that's really nice in Silicon Valley is Silicon Valley is full of smart people outside academia. And so there's the Larry Peterson, Mark Zuckerberg and the world who are anyway as smart or smarter than the best academics I've met in my life. And what they do is they they are at a different level. They build the systems, they build the customer facing system. They build things that people can use for their technical education. And they are inspired by research. [00:32:42] They're inspired by scientist. They hire the best PhDs from the best universities for a reason. So I think there's kind of vertical integration that between the real product, the real impact and the real thought, the real ideas, that's actually working surprisingly well in Silicon Valley. It did not work as well in other places in this nation. So when I worked at Carnegie Mellon, we had the world's finest computer science university. [00:33:06] But there wasn't those people in Pittsburgh that would be able to take these very fine computer science ideas and turn them into massive, impactful products. That symbiosis seemed to exist pretty much only in Silicon Valley and maybe a bit in Boston and Austin. Yeah, with Stanford. [00:33:25] That's really interesting. So if we look a little bit further on from the Grand Challenge and the launch of the Google self-driving car, what do you see as the state? [00:33:38] The challenges of autonomous vehicles as they are now is actually achieving that huge scale and having a huge impact on society. [00:33:48] I'm extremely proud of what what has been accomplished. And again, I'm taking a lot of credit for the work that us and I'm actually very optimistic and people have been kind of worrying, is it too fast or slow by the end of yet and so on. It is actually quite an interesting hot problem in that a self-driving car to build, one that manages 90 percent of the problems and in every driving is easy. We can literally over the weekend to do 99 percent might take a month. [00:34:18] Then there's one percent left. So one percent would mean that you still have a fatal accident every week. Very unacceptable. So now you work on this one percent and the 99 percent of the remaining one percent is actually still a relatively easy. But now you're down to like a hundredth of one percent and it's still completely unacceptable in terms of safety. So the variety of things you encounter are just enormous. And that gives me enormous respect for human beings to be able to deal with the culture on the highway. [00:34:46] Right. Or the deer in the headlights or the blown tire that we have never been trained for. And all of a sudden I have to handle it in an emergency situation and often do very, very successfully. It's amazing from that perspective how safe driving actually is given how many millions of miles we drive every year in this country. We are now at a point where I believe the technology is there and I've seen it. I've seen it. And we may have seen it in chapter for and crews in a number of companies. [00:35:13] And Voyager, we are vehicles now driving around and basically flawlessly able to drive people around in limited scenarios. In fact, you can go to Vegas today and order someone a lift. And if you got the right setting off your app, you'll be picked up by a driverless car. Now, there's still safety drivers in there, but that's a fantastic way to kind of learn what the limits of technology today. [00:35:39] And there's still some glitches, but the glitches have become very, very rare. I think the next step is going to be to down cost it, to harden it that entrapment sensors are not quite an automotive question yet. [00:35:52] And then to build the business models to really kind of go somewhere and make the business case. And the business case is hard work. It's not just, oh, my God, we have this capability. People just going to buy it. You have to make it affordable. You have to give people the kind of social acceptance of people. None of the teams yet has been able to gutsy enough to drive around without a person inside the car. And that's the next magical hurdle, will be able to send these vehicles around completely empty in traffic. [00:36:22] And I think I mean, I wait every day, wait for the news that Veremis has just done this. [00:36:28] So, you know, it's interesting. You mentioned gutsy. Me ask some maybe unanswerable question, maybe edgy questions, but in terms of how much risk is required, some guts in terms of leadership style, it would be good to contrast approaches. And I don't think anyone knows what's right. But if we compare Teszler and we more, for example, Elon Musk and the way my team, the there's slight differences in approach. So on Elon side, there's more I don't know what the right word to use, but aggression in terms of innovation and way more side, there is more sort of cautious, safety focused approach to the problem. [00:37:20] What do you think it takes? What leadership at which moment is right? Which approach is right? Look, I don't sit in either of those teams, so I'm unable to even verify it is correct. Right. In the end of a day, every innovator in that space will face a fundamental dilemma. And I would say you could put aerospace titans into the same bucket. Yes. Which is you have to balance public safety with your drive to innovate. [00:37:50] And this country in particular in states, has a 100 plus year history of doing this very successfully. Air travel is, what, 100 times are safe per mile than ground travel and then cars. And there's a reason for it, because people have found ways to be very methodological about ensuring public safety while still being able to make progress on important aspects, for example, like and noise and fuel consumption. So I think that those practices are proven and they actually work. [00:38:24] We live in a world safer than ever before. And yes, there will always be the provision that something goes wrong. There's always the possibility that someone makes a mistake or there's an unexpected failure. We can never guarantee to 100 percent absolute safety other than just not doing it. But I think I'm very proud of the history of the United States. I mean, we've we've dealt with much more dangerous technology like nuclear energy and kept that safe to. We have nuclear weapons and we keep those safe. [00:38:53] So we have methods and procedures that we balance these two things very, very successfully. [00:38:59] You've mentioned a lot of great autonomous vehicle companies that are taking sort of the level four, level five, the jump in full autonomy, well, the safety driver, and take that kind of approach and also through simulation and so on. There's also the approach that Tesla autopilot is doing, which is kind of incrementally taking a level two vehicle and using machine learning and learning from the driving of human beings and trying to creep up, trying to incrementally improve the system until it's able to achieve a Level four autonomy. [00:39:32] So perfect autonomy in certain kind of geographical regions. What are your thoughts on these contrasting approaches? [00:39:40] Well, I'm a very proud Tesla owner and I literally use the autopilot every day, and it literally has kept me safe. It is a beautiful technology specifically for highway driving when I'm slightly tired, because then it turns me into a much safer driver and that I'm 100 percent confident that's the case. In terms of the right approach, I think that the biggest change I've seen since I went away, my team is. Is this thing called deep learning and deep learning was or was not a hot topic when I when I started Amol or Google self-driving cars, it was there. [00:40:16] In fact, we started Google Brain at the same time and Google. So I invested in deep learning, but people didn't talk about it. It wasn't a hot topic. [00:40:24] And notice there's a shift of emphasis from a more geometrics perspective where you use geometric sensors that give you a full 3D view. You want to do a geometric reasoning about all of this box over here might be a car towards a more human like, oh, let's just learn about what this looks like, the thing I've seen 10000 times before. So maybe it's the same thing, machine learning perspective. And that has really put, I think, all these approaches on steroids and Udacity. [00:40:53] We teach a course in self-driving cars. In fact, I think it'd be great if it's over 20000 or so people on self-driving car skills. So every every self-driving car team in the world knows our engineers. And in this course, the very first homework assignment is to do Lahn finding and images and then finding images for and what this means as you put a camera into your car or you open your eyes and you would know where the line is and why it's all so you can stay inside the lane with your car. [00:41:21] Humans can do this super easily. You just look and, you know, weathervanes just intuitively for machines for long term of a super heart, because people would write these kind of crazy rules if there's like Vidalin, Marcus and his website, which means this is not quite right enough soil is or is not right, or maybe the sun is shining. So when the sun shines and this is white and this is a straight line, I mean, it's not quite a straight line because of what is curved. [00:41:43] And do we know that there's six feet between lane markings on not or 12 feet, whatever it is, and now the students are doing they would take machine learning to instead of like writing these crazy rules for telemarketers to say, hey, let's take an hour driving and label it until the vehicle. [00:42:00] This is actually the lane by hand. And then these are examples and have the machine find its own rules, what what lane markings are. And within 24 hours now, every student has never done any program before in the space, can write a perfectly and find as good as the best commercial and find us. And that's completely amazing to me. We've seen progress using machine learning that completely dwarfs anything that I saw ten years ago. [00:42:27] Yeah, and just as a side note, the self-driving car nano degree, the fact the launch that many years ago now, maybe four years ago, three years ago, three years ago, is incredible. [00:42:38] That that's a great example of system level thinking, sort of just taking an entire course that teaches how to solve the entire problem and definitely recommend people. [00:42:47] It's been popular and it's become incredibly high quality video with Mercedes and various other companies in that space. And we find that engineers from Tesla and VMware are taking it today. The insight was that two things. One is existing universities will be very slow to move because the departmentalized and there's no department for self-driving cars. So between Mekhi and double E and computer science, getting these folks together into one room is very, very hard. And every professor listening you have a notebook would probably agree to that. [00:43:19] And secondly, even if if all the great universities did this, which none so far has developed a curriculum in this field, it is just a few thousand students that can partake because all the great universities are super selective. So how about people in India? How about people in China or in the Middle East or Indonesia or Africa? Why should those be excluded from the skill of building self-driving cars? Are there any dumber than we are any less privileged? [00:43:47] And the answer is we should just give everybody the skill to build a self-driving car. Because if you do this, then we have like a thousand self-driving car startups. And if 10 percent succeed, that's like 100. That means 100 countries now will have self-driving cars and be safer. [00:44:03] It's kind of interesting to imagine impossible to quantify. But the number the you know, over a period of several decades, the impact that has like a single course got a ripple effect to society. If you just recently talked to Andrew, who was creator of Cosmos as a show, it's interesting to think about how many scientists that show launched. And so it's really. [00:44:30] In terms of impact, I can't imagine. But, of course, in the self-driving car, of course, that's you know, there's other more specific disciplines like deep learning and so on, that your desk is also teaching. But self-driving cars, it's really, really interesting, of course. [00:44:43] And it came at the right moment. It came at a time when there were a bunch of RV hikers actually hire the acquisition of a company, not for its technology or its products or business, but for its people. Yeah. So actually, I mean, maybe the company of 70 people, they have no product yet, but they are super smart people and they pay a certain amount of money. So I took the highest like Jim Cruise and Uber and others and did the math and said, hey, how many people are there and how much money was paid. [00:45:10] And as a lower bound, I estimated the value of a self-driving car engineer in these acquisitions to be at least ten million dollars. So think about this. You you get yourself a skill and you team up and build a company and you're worth now is ten million dollars. I mean, it's kind of cool. I mean, but what other thing could you do in life to be worth ten million dollars within a year. Yeah, amazing. [00:45:34] But to come back for a moment under deep learning and its application and autonomous vehicles, you know, what are your thoughts on Elon Musk's statement, provocative statement perhaps that later is a crutch. So there's geometric way of thinking about the world maybe holding us back if we should instead be doing in this robotics in this particular space of autonomous vehicles is using camera as a primary sensor and using computer vision and machine learning as the primary way to look. [00:46:06] I have two comments. I think, first of all, we all know that. People can drive cars without lights in their heads because we only have eyes and we mostly just use eyes for driving. Maybe we use some other perception about our bodies, accelerations, occasionally our years. Certainly not our noses, so so that the existence proof is there that ice must be sufficient. In fact, we could even drive a car if someone put a camera out and then gave us the camera with no latency, we would be able to drive a car that way, the same way. [00:46:42] So cameras are sufficient. [00:46:45] Secondly, I really love the idea that in the Western world, we have many, many different people trying different hypotheses. It's almost like an anthill and until tries to forge for food. But you can see there's two ends and we've got the perfect path and then every single and marches for the most likely location of foods. Or we can even just spread out. And I promise you, the spread out solution will be better because if the discussing philosophical, intellectual ends get it wrong and they all move in the wrong direction, they're going to waste a day and then they're going to discuss again for another week. [00:47:17] Whereas if all these aren't going to end, someone's going to succeed and got to come back and claim victory and get the Nobel Prize or whatever and economists and then they will march in the same direction. And that's great about society. That's great about the Western society, but not land based. We're not central base. We don't have a Soviet Union style central government that tells us where to forge. We just forge. We start and see corporate. [00:47:40] You get our money, go out and try it out and who knows who's going to win. [00:47:45] I like it in your when you look at the long term vision of autonomous vehicles, do you see machine learning as fundamentally being able to solve most of the problems? [00:47:56] So learning from experience, I'd say we should be very clear about what machine learning is and is not. And I think there's a lot of confusion. What it is today is a technology that can go through large databases of repetitive patterns and find those patterns. So an example, we did a study at Stanford two years ago where we applied machine learning to detecting skin cancer and images and we harvest that or build a data set of over a hundred twenty nine thousand skin for shots that all had been biopsied for what the actual situation was. [00:48:35] And those included melanomas and carcinomas, also included rashes and other skin conditions, lesions. And then we had a network find those patterns and it was by and large, able to then detect skin cancer with an iPhone as accurately as the best board certified Stanford dermatologist. We proved that no, not this thing was great in this one thing and finding skin cancer, but it couldn't drive a car. So the difference to human intelligence is we do all these many, many things and we can often learn from a very small data set of experiences with machines, still need very large data sets and things would be very repetitive. [00:49:20] That still to be impactful because almost everything we do is repetitive. So that's going to transform human labor. But it's not this almighty general intelligence. We're really far away from a system that works exhibit general intelligence. [00:49:35] To that end, I actually commiserate the naming a little bit because artificial intelligence, if you believe Hollywood is immediately mixed into the idea of human suppression and and machine superiority, I don't think that we're going to see this in my lifetime. I don't think human suppression is a is a good idea. I don't see it coming. I don't see the technology being there. What I see instead is a very pointed focus pattern recognition technology that's able to extract patterns from large data sets. [00:50:04] And in doing so, it can be super impactful and super impactful. Let's take the impact of artificial intelligence on human work. We all know that it takes something like 10000 hours to become an expert. [00:50:19] If you want to be a doctor or lawyer or even a really good driver, it takes a certain amount of time to become experts, machines now able and patients to observe people, become experts and observe experts and then extract those rules from experts in some interesting way they could go from law to sales to. [00:50:41] Driving cars to diagnosing cancer and then giving that capability to people who are completely new in their job, we now can and that's that's been done has been done commercially in many, many instantiations then means you can use machine learning to make people an expert on the very first day of their work. They think about the impact. If if your doctor is doing the first ten thousand hours, you have a doctor who is not quite an expert yet, who would not want a doctor, who is the world's best expert. [00:51:13] And now we can leverage machines to really eradicate the error in decision making error and lack of expertise for human doctors that could save your life. [00:51:24] We can linger on that for a little bit in which we do hope machines in the medical and the medical field could help assist doctors. [00:51:32] You mentioned this sort of accelerating the learning curve or people, if they start a job or in the first 10000 hours, can be assisted by machines. How how do you envision that assistants looking? [00:51:46] So we built this this app for an iPhone that can detect and classify and diagnose skin cancer. [00:51:52] And we proved two years ago that it does pretty much as good or better than the best human doctor. So let me tell you a story. So there's a friend of mine, let's call him Ben. Ben is a very famous venture capitalist. He goes to his doctor and the doctor looks at a mole and says he. That model is probably harmless and for some very funny reason, he pulls out that form with out. [00:52:17] He's a collaborator in our study and the app says, no, no, no, no, this is a melanoma. And for background, melanomas are skin cancers the most common cancer in this country. Melanomas can go from stage zero to stage four within less than a year. Stage zero means you can basically cut yourself with a kitchen knife and be safe. And stage four means your chances of living from five more years and less than 20 percent. So it's a very serious, serious, serious condition. [00:52:47] So. This doctor who took out the iPhone, looked at the iPhone and was a little bit about just to be safe, let's cut it out and biopsy it. That's the technical term for let's get an in-depth diagnostics that is more and just looking at it. And it came back as cancerous as a melanoma and it was then removed. And my friend Ben, I was hiking with him and we are talking about an incident trying to do this. Vokoun skin cancer. [00:53:15] He's so funny. My doctor just had an iPhone that found my cancer battle. [00:53:21] So I was completely intrigued. I didn't even know about this. So here's a person. I mean, this is a real human life right now who doesn't know somebody who has been affected by cancer. Cancer is cause of death. No. [00:53:31] Two, cancer is this kind of disease that that is mean in the following way. Most cancers can actually be cured relatively easily if you catch them early. And the reason why we don't tend to catch them early is because they have no symptoms, like your very first symptom of a gallbladder cancer or a pancreatic cancer might be a headache. And when you finally go to your doctor because of these headaches or your back pain and you're being imaged, it's usually stage four plus. [00:54:02] And that's the time when the chances might be dropped to a single digit percentage. So if you could levitate to inspect your body on a regular basis without a doctor in the room, maybe when you take a shower or what have you. I know that sounds creepy, but then we might be able to save millions and millions of lives. [00:54:22] You've mentioned there's a concern that people have about near term impact, severe in terms of job loss. So you've mentioned being able to assist doctors, being able to assist people in their jobs. [00:54:34] Do you have a worry of people losing their jobs or the economy being affected by the improvements in our anybody concerned about job losses? [00:54:44] Please come to get Asadi dot com. We teach contemporary tech skills and we have a kind of implicit job promise. We often when we measure we we spend way over 50 percent of our graduates in new jobs and they're very satisfied about it. And it costs almost nothing because like a thousand five hundred max or something like that. And so there's a cool new program. [00:55:05] They agree with what the US government guaranteeing that you will help us give scholarships that educate people in this kind of situation. [00:55:14] We're working with the U.S. government on the idea of basically rebuilding the American dream. So Udacity is just dedicated to 100000 scholarships for citizens of America, for various levels of courses that eventually will that get you a job? [00:55:33] And those courses are all somewhat related with the tech sector because the tech sector is kind of the hottest sector right now. And they range from entry level digital marketing to very advanced self-driving car engineering. And we're doing this with the White House because we think it's bipartisan. It's an issue that is that if you want to really make America great, being able to to be part of the solution and live the American dream requires us to be proactive about our education and our skill set. [00:56:02] That's just the way it is today. And it's always been this way. And we've always had this American dream to send our kids to college. And now the American dream has to be to send ourselves to college very, very efficiently. And maybe we can squeeze in in the evenings and things to online at all ages, all ages. So our our learners go from age 11 to age 80. I just traveled Germany and and the guy in the train compartment next to me was one of my students. [00:56:35] Wow. That's amazing. To think about the impact we've become the etiquette of choice for now, officially, six countries out of five countries, most in the Middle East, like Saudi Arabia and in Egypt. In Egypt, we just had a cohort graduate. We had 11 hundred high school students that went through programming skills proficient at the level of computer science undergrad. And we had a ninety five percent graduation rate. Even though everything's online, it's kind of tough, but we kind of trying to figure out how to make this effective. [00:57:06] The vision is the vision is very, very simple. The vision is education are to be a basic human right. It cannot be locked up behind ivory tower walls only for the rich people, for the parents who might be bribe themselves into the system and only for young people and only for people from the right demographics and the right geography and possibly even the right race. It has to be opened up to everybody. If we if we are truthful to the human, if truthful to our values, we got to open up education to everybody in the world. [00:57:39] So Udacity pledge of a hundred thousand scholarships, I think is the biggest pledge of scholarships ever in terms of the numbers. And we are working, as I said, with the White House and with very accomplished CEOs like Tim Cook from Apple and others, to really bring education to everybody in the world, not to ask you to pick the favorite of your children. [00:58:01] But at this point, Jasper, I have one that I know of. OK, good. [00:58:09] In this particular moment, what nanowire degree? What set of courses are you most excited about Udacity or is that too impossible to pick? [00:58:18] I've been super excited about something we haven't launched yet and we're building, which is when we talk to our partner companies, we have now a very strong footing in the enterprise world and also to our students. [00:58:31] We've kind of always focused on these hard skills, like the programming skills or math skills or building skills or design skills. And a very common task is soft skills like how do you behave in your work? How do you develop empathy? How do you work in a team? What are the very basics of management? How do you to time management, how do you advance your career in the context of a broader community? And that's something that we haven't done very well, acidy. [00:58:58] And I would say most universities are doing very poorly as well because we're so obsessed with individual test scores and so little so little attention to teamwork in education. So that's something I see us moving into as a company because I'm excited about this. And I think, look, we can teach people tech skills and they're going to be great. But if you teach people empathy, there's going to have the same impact maybe. [00:59:21] Harder than self-driving cars, but I don't think so, I think the rules are really simple. You just have to you have to you have to want it to engage its it's literally in school and in K through 12. We teach kids like get the highest math score. And if you are a rational human being, you might evolve from this education, say having the best math score and the best English scores, making me the best leader. And it turns out not to be the case. [00:59:47] It's actually wrong because making first of all, in terms of math scores, I think is perfectly fine. To hire somebody with great math skills, you'd have to prove yourself. You can hire some of the good empathy for you. That's much harder, but it can always hire some great math skills. [01:00:02] But we live in an affluent world where we constantly deal with other people. And it's a beauty. It's not a nuisance, it's a beauty. So if we somehow develop the muscle that we can do that well and empower others in the workplace, I think we're going to be super successful. [01:00:19] And I know many fellow roboticists and computer scientists that I will insist take this course so that we named you to be named many, many years ago. [01:00:31] And nineteen know three. The Wright brothers flew in Kitty Hawk for the first time, and you've launched a company of the same name Kittyhawk with the dream of building flying cars. [01:00:47] Evita's so at the big picture, what are the big challenges of making this thing that actually you've inspired generations of people about what the future looks like? What does it take? What are the biggest challenges? [01:01:00] So so flying cars has always been a dream. Every boy, every girl wants to fly. [01:01:06] Let's be honest. Yes. And let's go back in history and we are dreaming of flying. I think my only my single most remembered childhood dream has been a dream where I was sitting on a pillow and I could fly. I was like five years old. I remember like maybe three dreams of my childhood, but that's the one that we remember most vividly. And then Peter Thiel famously said their promised us flying cars and they give us 140 characters pointing Twitter at the time, limit your metastasise to 140 characters. [01:01:34] So we're coming back now to really go for these super impactful stuff like flying cars. And to be precise, they're not really cars. They don't have wheels. They're actually much closer to a helicopter than anything else to take off vertically in the fly horizontally. But they have important differences. One difference is that they are much quieter. We just released a vehicle called Project Heavy Side. They can fly over you as low as a helicopter and you basically can't hear it's like thirty eight decibels is like that. [01:02:04] If you were inside the library, you might be able to hear it. But anyway, outdoors, your ambient noise is higher. And secondly, they're, they're much more affordable, they're much more affordable in helicopters. And the reason is helicopters are expensive for many reasons. [01:02:21] There's lots of single point of figures in a helicopter. There's a boat between the blades that's caused Jesus fault. And the reason why it's called Jesus boat is that if this boat breaks, you will die. There is no second solution in helicopter flight because we have this distributed mechanism. When you go from gasoline to electric, you can now have many, many, many small motors as opposed to one big motor. And that means if you lose one of those motors, not a big deal, heavy side. [01:02:46] If it loses a motor on his, eight of those will lose one of those eight motors with seven left. It can take off just like before. And then just like before, we are now also moving into a technology that doesn't require a commercial pilot because in some level, flight is actually easier than the ground transportation. In self-driving cars. The world is full of like children and bicycles and other cars and mailboxes and curbs and shrubs and what have you. [01:03:14] All these things you have to avoid when you go above the buildings and tree lines, there's nothing there. I mean, you can do the test right now, look outside and count the number of things you see flying. I'd be shocked if you could see more than two things. It's probably just zero. In the Bay Area, the most I've ever seen was six, and maybe it's 15 or 20, but not ten thousand. So the sky is very ample and very empty and very free. [01:03:40] So the vision is, can we build a socially acceptable mass transit transit solution for daily transportation that is affordable? And we have an existence proof heavy side can fly 100 miles in range with 30 percent electric visitors. It can fly up to like a hundred and eighty miles an hour. We know that that solution at scale would make your ground transportation 10 times as fast as a car based on U.S. Census data, which means you would take your three hours of the yearly commute down to thirty hours and give it to 70 hours back. [01:04:21] Who wouldn't want I mean, who doesn't hate traffic like I hate. Give me the person who doesn't hate traffic. I hate traffic every day. Every time I'm in traffic, I hate it. And if we could free the world from traffic, we have technology. You can free the world from traffic. We have the technology. It's there. We have an existence. It's not a technological problem anymore. [01:04:41] Do you think there is a future where tens of thousands, maybe hundreds of thousands of both delivery drones and flying cars of this kind of tires fill the sky? [01:04:56] I have to believe this. And there's obviously the societal acceptance is a major question. And, of course, safety is, I believe, a safety issue and see ground transportation safety, as has happened for aviation already, commercial aviation. And in terms of acceptance, I think one of the key things is noise. That's why we are focusing relentlessly on noise and we bid perhaps the quietest electric Vitol vehicle ever built. The nice thing about the sky is, is three dimensional. [01:05:26] So so any mathematician will immediately recognize the difference, be one of a like a regular highway to three of a sky. [01:05:33] But to make it clear for the layman, say you want to make one hundred vertical lanes of Highway one of one in San Francisco because you believe building a health and vertical lanes is the right solution. Imagine how much it would cost to stack one hundred vertical lanes physically onto one or one. There would be prohibitive. There would be consuming the world's GDP for the entire year just for one highway. It's amazing how expensive, thick in the sky. It would just be a combination of a piece of software because all these lanes are virtual. [01:06:03] That means any vehicle that is in conflict with another vehicle would just go to different altitudes. And the conflict has gone. And if you don't believe this, that's exactly how commercial aviation works. When you fly from New York to San Francisco, another plane flies from San Francisco, New York. There are different altitudes so they don't hit each other. It's a solved problem for the jet space and it will be a soft problem for the urban space. There's companies like Google and Amazon working on very innovative solutions. [01:06:33] How do airspace management use exactly the same principles as we used today to route today's jets? There's nothing hard about this. [01:06:42] Do you envision autonomy being a key part of it so that that the the flying vehicles are either semi-autonomous or fully autonomous, 100 percent autonomous? [01:06:54] You don't want idiots like me fly in the sky, I promise you. And if you have 10000, what's the movie? A fifth element to get people to happen if it's not autonomous and a centralized, that's a really interesting idea of a centralized sort of management system for planes and so on. So actually, just being able to have. [01:07:16] Similar as we have in the current commercial aviation, but scale it up to much, much more vehicles. That's a really interesting optimization problem. [01:07:24] It is very mathematically very, very straightforward, like the gap we leave between jets, gantries and part of the business. There isn't that many jets. So it just feels like a good solution today when you get vector by air traffic control. Someone talks to you. So any ATC controller might have up to maybe 20 planes on the same frequency. And then they talk to you have to talk back. And that feels right because there isn't more than 20 planes around any hour. [01:07:49] So you can talk to everybody. But if there's 20000 things around, you can't talk to everyone anymore. So we have to do something that's quite digital, like text messaging, like we do have solutions. [01:07:59] Like we have had four or five billion smartphones in the world now and they're all connected. And some of his solve the scale problem for smartphones. We know where they all are. They can talk to somebody and they're very reliable. They are amazingly reliable. We could use the same system, the same scale for air traffic control. So instead of me as a pilot talking to a human being and in the middle of the conversation, receiving a new frequency like how ancient is that? [01:08:26] We could digitize the stuff and and digitally transmit the right flight coordinates. And that solution will automatically scale to 10000 vehicles. [01:08:36] We talked about empathy a little bit. Do you think we will one day build in a system that a human being can love and that loves that human back like in the movie? [01:08:47] Her look, I'm I'm a pragmatist. For me, a is a is a tool. It's like a shovel. And the ethics of using the shovel are always with us, the people. And it has to be this way in terms of emotions. I would hate to come into my kitchen and see that my refrigerator spoiled all my food, then have it explained to me that it fell in love with a dishwasher and it wasn't as nice as the dishwasher. [01:09:16] So as a result, it neglected me. That would just be a bad experience and it would be a bad product, would probably not recommend this refrigerator to my friends. And that's where I draw the line. I think to me, technology has to be reliable and has to be predictable. I want my car to work. I don't want to fall in love with my car. I just wanted to work. I wanted to compliment me not to replace me. [01:09:43] I have very unique human properties and I want the machines to make me turn me into a super human like I'm already a super human today, thanks to the machines that surround me and give you examples. I can run across the Atlantic at near the speed of sound at thirty six thousand feet today. That's kind of amazing. I can hear my voice now carries me all the way to Australia using a smartphone today. And it's not not the speed of sound which would take hours. [01:10:16] It's the speed of light. My voice travels at the speed of light. How cool is that? That makes me super human. [01:10:22] I would even argue my my flushing toilet makes me super human. Just think of the time before flushing toilets and maybe you have a very old person in your family that you can ask about this or take a trip to a rural India to experience it. It's it's it makes me superhuman. So to me, what technology does? It compliments me. It makes me stronger. [01:10:47] Therefore, words like love and compassion have very little a very little interest in this for machines. [01:10:55] I have interest in people. [01:10:57] You don't think first of all, beautifully put, beautifully argued. But do you think love has use in our tools? Compassion? [01:11:06] I think life is a beautiful human concept. And if you think of what love is, love is a means to convey safety, to convey trust. I think trust has a huge need in technology as well, not just people. We want to trust our technology the same way or in a similar way. We trust people in human interaction standards have emerged and feelings emotions have emerged, maybe genetically, maybe Virgile, that I able to convey a sense of trust, a sense of safety, sense of passion, of love, of dedication, that that makes the human fabric. [01:11:47] And I'm a big slacker for love. I want to be loved. I want to be trusted and be admired, all these wonderful things. And because all of us, we have this beautiful system, I wouldn't just blindly copied this to the machines. Here's why. When you look at, say, transportation, you could have observed that up to the end of the 19th century, almost all transportation used any number of legs from one leg. Two legs to a thousand legs, and you could have concluded that is the right way to move about the environment with the exception of birds flapping wings. [01:12:25] In fact, there are many people in aviation that flap wings to their arms and jump from cliffs. Most of them didn't survive then. [01:12:33] Then the interesting thing is that the technology solutions are very different, like technologies very easily. [01:12:39] With the wheel in biology, it's super hard to believe it has very few perpetually rotating things in biology and everyone else things in engineering. We can build wheels. And those wheels gave rise to cars, similar wheels gave rides to to aviation. Like there's no thing that flies that wouldn't have something of rotates like a jet engine or helicopter blades. [01:13:08] So the solutions have very different physical laws in nature, and that's great. So for me to be too much focused on this is how nature does it lets us replicate it. [01:13:19] If he really believed that the solution to the agriculture revolution was a humanoid robot, it would still be waiting today. [01:13:27] Again, beautifully put. You said that you don't take yourself too seriously. [01:13:32] You just say that. I mean to say that maybe you don't take me seriously. I'm not very good. You're right. I don't want to. I just made that up. But, you know, you have a humor and a lightness about life that I think is as beautiful and inspiring to a lot of people. Where does that come from? [01:13:51] The smile, the humor, the lightness amidst all the chaos on the hard work, the. And where does that come from? I just love my life. [01:14:01] I love I love the people around me. I love. I'm just so glad to be alive. Like I'm, what, 52 out of life? People say fifty to fifty one and I feel better. [01:14:15] But in looking around the world looking just go back to and that energy is like humanity is what, three hundred thousand years old. But for the first three and a thousand years minus the last one. Our life expectancy would have been plus or minus 30 years, roughly give or take. So I would be long dead now. Like that makes me just enjoy every single day of my life because I don't deserve this, like why am I born today when so many of my ancestors died of horrible deaths, like famines, massive wars that ravaged Europe for the last 1000 years, mostly disappeared after World War Two, when the Americans and the allies did something amazing to my country that didn't deserve it as a country. [01:15:07] Germany is so amazing. And then when you're when you're alive and feel this every day, then it's just so amazing what we can accomplish, what we can do. We live in a world that is so incredibly, vastly changing every day, almost everything that we cherish from your smartphone to your flushing toilets to all these basic inventions, your new clothes, your own, your watch, your plane, penicillin and no anesthesia for surgery. Penicillin have been invented in the last 150 years. [01:15:46] So in the last 150 years, something magical happened and I would trace it back to Gutenberg and the printing press that has been able to disseminate information more efficiently than before, that all of a sudden they were able to invent agriculture and nitrogen fertilization that made agriculture so much more potent that we didn't have to work on farms anymore. And we could start reading and writing and we could become all these wonderful things. We are today from airline pilot to massage therapists to software engineer. [01:16:13] This is amazing. Like living in that time is such a blessing. We should really think about this. Steven Pinker, who is a very famous author and philosopher, whom I really adore, wrote a great book called Enlightenment Now, and that's maybe the one book I recommend. [01:16:28] And he asks the question, if there was only a single article written in the 20th century, only one article, what would it be? What's the most important innovation of the most important thing that happened? And he would say this article would credit a guy named Carl Bosz and I challenge anybody. Have you ever heard of the name Carl? I hadn't. Okay, there's there's a corporation in Germany, but it's not associated with kybosh. So I looked it up. [01:16:56] Kybosh invented nitrogen fertilization. And in doing so, together with an older invention of of irrigation, I was able to increase the yield for agricultural land by a factor of 26. So a 2500 percent increase in fertility of land. And that saw, Steve Pinker argues, saved over two billion lives today. Two billion people who would be dead if this man hadn't done what he had done. OK, think about that impact and what that means to society. [01:17:28] That's that's the way I look at the world. I mean, it's just so amazing to be alive and to be part of this. And I'm so glad I lived after, but not before. [01:17:37] I don't think there's a better way to end a sabbatical. It's an honor to talk to you, to have had the chance to learn from you. Thank you so much for that. Thanks for coming out. [01:17:45] It's a real pleasure. Thank you for listening to this conversation with Sebastian Thrun and thank you to our presenting sponsor cash app, download it, use collects podcast. You'll get ten dollars and ten dollars will go to First, a STEM education nonprofit that inspires hundreds of thousands of young minds to learn and to dream of engineering our future. If you enjoy this podcast. Subscribe on YouTube. Get Five Stars, an Apple podcast, support on Patreon or connect with me on Twitter. [01:18:15] And now let me leave you with some words of wisdom from Sebastian Thrun. It's important to celebrate your failures as much as your successes if you celebrate your failures really well, if you say, wow, I failed, I tried, I was wrong, but I learned something, then you realize you have no fear. And when your fear goes away, you can move the world. Thank you for listening and hope to see you next time.

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