第 87 期·中文精讀

理查德·道金斯:演化、智慧、模擬與模因

Richard Dawkins: Evolution, Intelligence, Simulation, and Memes

演化生物學家談自然選擇如何塑造智慧,模因作為文化複製子的概念,以及模擬假說的可能性。

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1976年,理查德·道金斯(Richard Dawkins)在《自私的基因》裡隨手造了一個詞:meme(模因)。他當時能想到的傳播渠道是書、報紙、廣播、電視,一個想法從一個人傳到另一個人,要花上幾天、幾個月,甚至幾年。四十多年後,這個詞成了整個網際網路的通用貨幣,一張圖、一段影片、一句口號,幾個小時內能繞地球一圈。道金斯自己說,網際網路給模因的傳播帶來了階躍式的變化。

模因只是這場對話的一個切面。道金斯是演化生物學家,也是這個時代最敢說話的科學辯護者之一。一個多小時的訪談裡,他從宇宙裡有沒有外星智慧,一路聊到人工智慧、意識之謎、道德的來源,最後落到死亡和生命的意義。貫穿始終的是同一條線索:任何複雜的東西,都得一步一步長出來,沒有捷徑。

宇宙裡大機率有智慧生命,而且大機率是達爾文式的

道金斯給出的第一個判斷很乾脆:宇宙裡有智慧生命的機率很高。人類能觀測到的恆星數量大約是10的22次方,行星只會更多。既然地球上長出了智慧生命,在這麼龐大的基數上別處再長一次,幾乎是可預期的事。

他把這件事拆成兩步。第一步是生命的起源,這一步本身就相當不容易;第二步是從生命演化出智慧,同樣不容易。兩步疊加,機率確實低,但低不到10的22次方分之一那麼誇張。如果有人堅持地球是宇宙裡唯一的孤例,等於在說這裡發生過的事情荒謬到了極點,道金斯不接受這種說法。

那怎麼才能認出外星智慧?他認為最現實的途徑是無線電,外星人親自來地球的可能性極低。真收到訊號,人類得有辦法判斷那是智慧發出的,而不是自然噪聲。學界討論過很多方案,最經典的是素數:把質數序列發出去,任何有數學的文明都能一眼認出,這是"我們在這裡,我們聰明"的最直白宣言。數學大概也是通用的,道金斯相信外星文明也會有自己的勾股定理。

更進一步,他願意把脖子伸出去賭一把:如果哪天真的發現了外星生命,那多半是達爾文式的生命,靠某種自然選擇運轉,也就是隨機生成的編碼經過非隨機的存活篩選。生命不一定用DNA,遺傳機制可能完全不同,但只要有複雜的適應,就逃不掉某種選擇過程。

演化是唯一能解釋智慧生命的理論

聊到"智慧設計",道金斯的立場幾十年沒變。他認為,要解釋智慧生命是怎麼出現的,科學手裡只有演化這一套理論,從來沒有第二種像樣的替代方案被提出來,將來大概也不會有。

有人提醒他,說"永遠不會有"這種話很危險,一百年後被打臉怎麼辦。他的回答很坦然:就算真有更新,那也更像愛因斯坦對牛頓的修正,是理論的升級,而不是推倒重來。核心邏輯不會變。

那麼問題來了,人類能不能像"智慧設計"聲稱的那樣,親手造出智慧?道金斯的信念是:原則上一定可以。因為他的大腦裡沒有任何非物理的東西,一切都靠物理定律運轉,那麼複製它就只是技術問題。但實踐上可能非常難,難到唯一的實現路徑本身就是某種演化過程,得靠大量試錯、篩選、迭代。

讓他意外的是,這件事的進度比早期先驅們預想的慢得多。他本以為會來得更早。

演化是最好的工程師,也是最糟的工程師

道金斯用一句話概括了演化的矛盾:它糟糕地浪費,又驚人地出色。

浪費到什麼程度?它是徹頭徹尾建立在死亡之上的。人類讚歎一隻信天翁、一隻禿鷲、一隻雄鷹的飛行設計,任何工程師都會為這樣的作品驕傲。可為了打磨出這個作品,死掉的個體數量是天文數字。成品越精美,過程越殘酷。

而演化的作品裡還混著一堆糟糕設計,一看就知道是歷史遺留的將就。道金斯最愛舉的例子是喉返神經。這條神經從大腦出發,要去的地方是喉頭,也就是聲帶。可它沒有直接走到喉頭,而是先一路向下鑽進胸腔,繞過大動脈,再折返上來回到喉頭。他參與解剖過一隻在動物園死去的長頸鹿的脖子,親眼看到這條神經緊貼著喉頭一閃而過,繼續往下走好幾英尺,再繞回來。效率低到荒唐。

原因藏在歷史裡。人類和所有哺乳動物、魚類的共同祖先,那時候的"喉頭"其實負責的是鰓的一部分,而那條神經最直接的走法就是在動脈後面。後來四足動物上岸,脖子開始變長,把神經從動脈上"跳"過去的代價太大,可每拉長一點點脖子、讓神經跟著延長一點點,代價卻小到可以忽略。於是一毫米一毫米地,神經越繞越遠。到了長頸鹿身上,就成了一條繞到離譜的彎路。

這就是壞設計的典型。任何工程師都會把這種方案扔回去重做。真正讓道金斯覺得反直覺的,其實是壞設計為什麼沒有更多。自然選擇擅長小修小補,一邊打補丁一邊清理早期的錯誤,把一手爛牌儘量打好,最後竟然也交出了相當漂亮的成績。

人類可能是人工智慧的生物載入程式

順著這個思路,主持人丟擲一個設想:人類會不會只是超級智慧的"生物載入程式",一旦機器智慧啟動,人類這個階段就完成了使命。

道金斯認同超人類水平的智慧最終會是人造的。他看不到人腦繼續變大變強的希望。過去兩三百萬年裡,人腦的體積確實在劇烈膨脹,因為自然選擇偏愛那些腦子更大的個體。但這個趨勢已經停了。

原因很直接:今天聰明不再能換來更多後代。智力能幫你掙到錢、換來體面的房子和車、贏得同行的尊重,甚至能讓你過得很成功,可它不會讓你多生幾個孩子,不會增加你傳給下一代的基因。自然選擇失去了推動力,人腦的演化就慢了下來。

與此同時,計算機和整個技術體系正以非基因的方式飛速進化,用跳躍而不是爬行的速度往前衝。

大腦這臺慢速機器,為什麼這麼強

主持人提到腦機介面,比如Neuralink,想把電腦和人腦雙向連線,長期目標是擴充套件大腦的容量和能力。道金斯的回答很誠實:有沒有前景,他不夠格判斷。但有一件事他一直想不通。

人腦體積那麼小,單個神經元的工作速度那麼慢,跟電子元件完全沒法比,可它能做到的事情卻驚人。設想造一臺塞進人類頭骨大小的電腦,裡面的電晶體慢得像神經元一樣,這臺機器能幹什麼?道金斯覺得,這裡面一定藏著我們還沒搞懂的東西。

他剛和羅傑·彭羅斯(Roger Penrose)聊過。彭羅斯也是位堅定的唯物主義者,不談玄學,但他同樣認為意識是個謎,可能牽涉到量子層面的機制。道金斯的立場是:彭羅斯是世界上最頂尖的物理學家之一,他沒資格反駁。關於意識,沒人真正知道答案。

正因為我們知道得太少,從"我們不懂"跳到"所以是超自然力量",這一步太容易邁出去了。道金斯把它稱為一種怯懦。他不認為這是唯一的出路。

模因:文化的基因

回到《自私的基因》。基因中心視角的精妙之處,是把生物體看成一份軟體藉以流傳的載體。道金斯把同一套邏輯搬到了文化上,於是有了模因:基因在文化裡的對應物。

這個詞只在一種情況下有用,就是文化傳播裡真的存在達爾文式的機制。文化當然會傳播,問題在於,它是不是以"有的複製得多、有的複製得少"的差異方式在傳播。模因確實在複製,這一點沒有爭議。真正的爭議是:這種複製夠不夠達爾文。

沿著這個邏輯,還能問出一個更刺激的問題:動物身體是被改造成傳播基因的機器,那麼人類是不是也在某種程度上被改造成傳播模因的機器?連身體形態都可能被模因改寫。髮型、妝容風格、割禮,這些都是身體上的實際改變,它們不來自基因,卻一代一代傳下去,或者像病毒一樣橫向擴散,帶著某種準遺傳的性質。

一旦從物理層面漂移到純觀念層面,事情就變得更有意思了,因為那裡是一整個觀念、意識形態、政治制度的空間。道金斯覺得模因不只是個比喻,它比比喻要多一點東西。

宗教觀念的傳播最能說明問題。它在兩個方向上流動。縱向是祖輩、父輩到子女,一代傳一代,像常規的遺傳。橫向是佈道者轉化信眾,像流行病學,一個魅力十足的牧師能像病毒一樣把觀念傳開。

網際網路把模因傳播推上了新臺階

道金斯造這個詞的時候,網際網路還不存在。他腦子裡是書、報紙、廣播、電視,而現在一個想法能在瞬間朝所有方向躥遍全球。他把這稱作模因傳播能力的一次階躍。

主持人打了個比方:七十年代像是一片與世隔絕的加拉帕戈斯群島,網際網路一來,所有物種突然被全球化,幾秒鐘就能把資訊送到幾百萬人面前。想法開始繁殖、變異、演化,出現選擇壓力,出現各種群體動態。

道金斯覺得,用達爾文的方式去研究這類現象是個好主意。過去人類的觀念傳播範圍很窄,祖先生活在村莊和小部落裡,人人相識,想法在村裡流轉,偶爾跳到鄰村,最後也許跳到鄰國,慢得可以。現在村莊國際化了。人們待在被稱作"迴音室"的地方,同一個村裡的成員可能散落在世界各地,只是碰巧興趣相同、術語相同、熱情相同。地平說協會有個很貼切的例子:成員不住在一起,卻能找到彼此,用同一套語言互相交流,也用同一套胡話互相取暖。這是古老村莊觀念的分散式版本。

村莊不是被設計出來的,它就是人們碰巧形成的聚居方式。數字空間裡長出的觀念社群,也是同樣的道理。

那達爾文式選擇具體看什麼?看哪些想法能擴散,哪些擴散不了。地平說只有極少數人信,它註定傳不開,因為實在太荒謬。但另一些觀念,哪怕明顯是錯的,照樣能擴散,因為它對人有某種吸引力。這裡的"吸引力"不需要精確定義,動物之間的吸引也不必服務於生存,唯一的要求是能被傳播出去。真相只是幫助傳播的一個條件,還有別的條件同樣管用。孔雀那條華麗得過分的尾巴不幫它活命,卻幫它把基因傳下去。一個其實很爛、但人們看不出來還覺得迷人的想法,會以同樣的方式擴散。

性選擇:美本身就有力量

由此引出一個關於美的爭論。有觀點認為,某些動物的美本身就有獨立的目的,跟生存無關。道金斯覺得這種說法被扭曲了。

當年達爾文提出性選擇,並不要求雌性覺得迷人的東西必須有用。他覺得只要雌性覺得它迷人,這就夠了,它完全可以毫無用處,卻又絕不是真的無用,因為它在傳遞基因上很管用。後來華萊士(Wallace)不喜歡這套邏輯,主張像孔雀尾巴這樣的特徵必須有某種實用價值。兩派吵到今天,支援度大致相當,誰也沒壓倒誰。

道金斯自己不屬於任何一派。他認為兩種機制在不同情形下都可能成立,而且兩邊都已經被數學打磨得比當年精細得多。主持人坦言自己更浪漫,偏好達爾文那一派,願意相信美本身就是演化裡一股強大的力量,也是宗教裡一股強大的力量。

宗教會消失嗎

道金斯的回答是:會,但可能要很久。他相信終有一天幾乎沒人再信神,宗教不再構成社會道德的骨架。他期待的替代品是真相和理性,由科學和日常感官觀察就能確認的那類真相。

有人主張社會需要一個領袖式人物才能正常運轉,哪怕這個人物是虛構的。道金斯讀過這類書,覺得沒那麼有說服力。更讓他反感的是背後的潛臺詞:你和我足夠聰明,所以不必信神,但普通人需要。這種居高臨下的態度,他明確表示不喜歡。

個體層面,他承認自己作為科學家是謙卑的。人類真正掌握的知識,佔全部可知世界的比例小得可憐,連最確定的物理定律都可能還有下文,99.99%的世界仍籠罩在迷霧裡。他認可這種謙卑帶來的敬畏感,但堅決反對用超自然解釋去填補空白。現有科學不夠用,那就去找更好的科學,多幹點活。科學史就是一部問題被逐個解決的歷史。用非科學的解釋來收尾,是怯懦地躺平,是在呼喚魔法。

他順帶點出一層反諷:急著搬出超自然解釋,其實是另一種傲慢,因為它認定"科學解釋不了,那超自然的宗教解釋就一定對"。真正謙卑的姿態是承認"我們不知道,還得接著幹"。

被問到怎麼看待那些相信超自然的人,道金斯並不敵視他們。他見過很多非常好的人。他判斷問題出在一種誤解:人們從"我們不懂"直接跳到超自然這個所謂替代方案,可它壓根不是替代方案,它是個非解釋。人們本該跳到"科學需要更努力",而不是跳到神那裡。他把這些人稱為走錯了路的人,僅此而已。

陰謀論者的信念從哪來

主持人提到一個微妙的共同點:陰謀論者的信條是"懷疑一切",而這恰恰也是好科學家的信條。道金斯認同,給某件事貼上"陰謀"的標籤就一筆勾銷,太草率了。陰謀偶爾是真的,得逐個按證據審視。地平說是明顯的胡說,不必費勁,但別的陰謀論也許真有其事。

關於"登月造假",道金斯說能理解它為什麼有市場,但要嚴謹地證偽非常難,只能靠人的直覺判斷誰在撒謊、誰得配合。這裡他的直覺是:需要串通的人太多,涉及細節太多,動機又說不通,這種事發生的機率極低。他更願意相信這個世界上的多數人是好的。

那人們為什麼願意信呢?道金斯覺得這是心理學問題。指出皇帝沒穿衣服、跳出框架思考、在眾人皆醉時獨醒,這些感覺太爽了。科學家骨子裡也想推翻整個學界的共識。歷史上確實有過孤獨的天才笑到最後,但更多時候,自以為孤獨天才的人最後證明不是。是不是異類、是不是逆流而上,本身不構成正確,正確得靠證據說話。

他也指出陰謀論和宗教的關鍵差別。宗教靠的是代代相傳和童年灌輸,那是一種極其強大的力量,所以天主教、伊斯蘭教這類大宗教能長久延續。陰謀論不一樣,它通常由某個人編出來,說給另一個人聽,對方就願意信。道金斯理解不了人們為什麼那麼急著去附和一個偶然讀到或遇到的陌生人編的故事。童年灌輸他能理解,因為孩子還小、沒有批判能力,可9·11陰謀論、肯尼迪遇刺陰謀論、登月陰謀論,都不是童年灌輸。

道德不來自宗教

道金斯反覆講的一件事是:人類不需要宗教也能有道德。那道德從哪來?他認為這個問題複雜又迷人。

一個明顯的事實是,文明的道德標準會隨時代改變,幾十年、幾百年地漂移。二十一世紀的人有一套相當一致的道德觀,跟十七、十八、十九世紀的人一比,差別清楚可見。我們沒那麼種族主義,沒那麼性別歧視。當然內部有分佈,有人更冷酷,有人更保守,有人更開明,但整條高斯分佈整體在挪動,而且一直在朝同一個方向挪。

這股力量跟宗教沒什麼關係。舊約裡的道德是青銅時代的產物,今天看簡直可怕:人祭、以眼還眼、以牙還牙、為了私仇殺人、因為違反安息日就處死。這些是當年沙漠裡那些人編出來的,現在完全無法想象。

宗教文字往往只是反映了它誕生那個時代的道德分佈。問題在於,觀念的模因跑得比文字快得多。把幾千年前寫下的文字當成今天的道德依據,顯然不是個好辦法。道金斯說得很直接:我們不只不該從這種文字里取道德,事實上我們也沒有。真照文字辦,就得歧視女性、搞種族主義、處死同性戀。我們沒這麼做,也不該這麼做。

當然,有人會用二十一世紀的標準去讀聖經,挑出合心意的段落。耶穌確實說過不少好話。可你之所以挑這幾句、丟那幾句,用的還是二十一世紀的道德。既然如此,為什麼不乾脆跳過聖經這個中間商,直接站到二十一世紀的道德上?它從哪來是個更難的問題,但方向是清楚的。

道德價值像技術一樣在演化。它是不是有演化價值,道金斯不確定,它是不是可能飄向任何方向,他也不確定。他能確定的是一種"傳遞意義上的進步":每一步都朝著與上一步相同的方向走,於是整體變得更溫和、更體面、更少暴力。這裡要加個限定:所謂體面,是"以我們的標準"而言。成吉思汗大概會覺得今天的人太軟,社會里全是弱者。用 hindsight 回看歷史,我們看到的是朝我們走來的趨勢,但歷史並不保證不會退回成吉思汗那種狀態。他覺得多半不會,但只是多半。

主持人提到人類的暗面:歷史上人們把觀看酷刑、角鬥、他人的痛苦當成娛樂,直到近代才變。道金斯認同這種殘酷深埋在人性的底層,今天我們把那股衝動引進了體育。他自己的家族經歷過蘇聯和納粹大屠殺,很清楚暗面隨時可能翻上來。進步是有反覆的,大屠殺就是一次明顯的倒退。但把歷史拉長看,方向依舊一致。

我們會不會造出新神

帕梅拉·麥考黛克(Pamela McCorduck)在《會思考的機器》裡寫過,人類自古就有"鑄造神明"的願望。主持人問,這種古老衝動和今天造智慧技術的衝動,是不是一回事。

道金斯承認有某種聯絡,古老慾望想解釋掉謎團,科學也在做這件事。至於造神,他記得讀過一篇半開玩笑的論文,說我們有了一個新神叫Google,我們向它祈禱、崇拜它,像問神諭一樣向它請教。道金斯覺得這說法挺好玩,但他自己不會這麼表達。

不過他認真給了一個區分。未來真出現遠超人類的智慧機器,或真碰上更聰明的外星人,人類可能會把它們當神一樣崇拜,這完全可能。但這裡有個根本區別:一種是"僅僅被定義為極其強大、極其聰明的存在",另一種是"不需要解釋、本來就該在那裡"的神。就算我們真遇到一個遠遠比我們聰明的外星人,它也不是那個意義上的神,因為它一定是透過某種漸進、逐步、累加的過程出現的,多半就是達爾文式演化。智慧設計在宇宙裡是晚來的產物,是演化或工程設計一步步造出來的,大量的工作都發生在那個緩慢的底層程式裡。這兩種東西天差地別。

模擬假說與雲中的大腦

主持人順著"為什麼"的問題往下推:如果世界是一場模擬,就有一個程式設計師式的東西可以問。道金斯說,模擬假說不是完全荒謬,但你還是得解釋程式設計師。哪怕我們在模擬裡,程式設計師本身也得是演化出來的。如果程式設計師活在更高一層的模擬裡,那更高層的程式也得靠漸進過程演化出來。繞不開,最終總要回到一個逐步累加的解釋過程上。

他最早是從丹尼爾·加盧耶(Daniel Galouye)的科幻小說《 counterfeit world》裡接觸到這個想法的:主角們在執行一臺模擬世界的巨型計算機,出了故障,有人得鑽進模擬世界裡去修,最後發現他們自己也在更高一層的模擬裡。後來尼克·博斯特羅姆(Nick Bostrom)把它當成嚴肅命題復活了,甚至認為我們身處模擬的機率相當高。

道金斯內心並不真的相信,但他喜歡博斯特羅姆的機率論證。他的補充是:就算世界是被編出來的,也不意味著能有奇蹟。程式設計師必須緩慢演化,寫程式本身就很花時間,宇宙不是一鍵生成的,得慢慢長出來。他承認模擬本身可以瞬間啟動,記憶都可以是偽造的,但從工程角度,那臺"母機"逃不掉漸進過程。

他還有一個關於大腦的聯想。當年他百歲的母親驚歎一部智慧手機能做的事,查百科全書、放她喜歡的音樂,全塞在一個小東西里,而真正的算力其實在雲端。他由此猜測:也許我們以為裝在頭骨裡的能力,大部分其實也在某個"雲"裡,頭骨只是介面。彭羅斯認為意識是物理的基本組成部分,不必全待在腦子裡;道金斯則傾向於認為它可能不在腦子裡,而在那個"雲"裡。他自己也承認,這只是個猜測。

感知不等於現實

主持人提到唐納德·霍夫曼(Donald Hoffman)的觀點:生物為了存活而感知世界,但感知不等於底層真實。道金斯相信存在一個底層真實,同時認為感知確實是建構出來的。

他舉了內克爾立方體(Necker cube)的例子。一張平面圖,大腦卻把它看成三維的立方體,而且會週期性翻面。原因是感官資料同時相容兩種立方體,大腦幹脆在兩者之間來回切換。道金斯認為這就是我們一直在做的事:看到桌子、看到人、看到任何東西,都是在用感官資料去建構或呼叫一個預先建好的模型。

他講了個親身體驗。碰到一個熟人,一開始覺得不太像,等他終於認出這是誰,那張臉就像內克爾立方體一樣切換成了熟悉的樣子。好像大腦從內部的檔案櫃裡把這張臉取出來,貼到了感官資料上。這種把海量感官資訊壓縮、過濾、變得可理解的機制,本身就是一件了不起的事。

影響道金斯的書

被問到對自己影響最大的書,道金斯先提了達爾文。他有點不好意思地承認自己從沒通讀過達爾文,可讀的時候被震撼到了。達爾文寫作於十九世紀中葉,卻像是在提前一百年工作。除了遺傳學,他幾乎所有判斷都驚人地正確。當然還得補上後來的進展,達爾文要是知道沃森和克里克,知道孟德爾遺傳學,一定會瞠目結舌。而遺傳的數字化本質,正好解開了他那個時代最大的謎團。

科學之外,他坦承自己從科幻裡學了不少科學。除了加盧耶,他還推薦《黑暗宇宙》(Dark Universe),講一個永恆黑暗世界的故事:人們像蝙蝠和鯨一樣靠回聲定位在地下洞穴和通道里摸索,顯然是靠達爾文式的方式適應了徹底的黑暗。有意思的是,他們的神話和宗教帶著基督教的影子,卻建立在"光"之上。他們相信曾經有一個光統治的樂園,因為人類的罪,光被放逐了,但光以神話和俗語的形式留存下來,比如"偉大的光"、"光比光更強"。他們不說"I see what you mean",而說"I hear what you mean"。同樣的宗教元素,以完全不同的荒誕形式出現,成了關於基督教和"墮落"教義的一則溫柔寓言。

他還提到弗雷德·霍伊爾(Fred Hoyle)的《黑雲》和《仙女座A》,以及卡爾·薩根的《接觸》。後兩部共享一個主題:我們不會被外星人用肉體入侵,但可能被無線電訊號入侵。訊號可以操縱我們,說服我們造一臺執行它們軟體的計算機,軟體借電波傳進來,機器接管世界。道金斯覺得這個設想和他自己的思想高度共振:肉體是被DNA這份編碼資訊操縱的載體,而模因空間裡的資訊不必是物理的,照樣能傳播。外星智慧也許正是以觀念的形式滲透進來,用想法控制我們。

生命的意義與死亡

最後是那個最"傻"也最重要的問題:生命的意義是什麼。

道金斯的科學回答是:傳播DNA。可這不是他真實的感受。他說,生命的意義大概人各不同,每個人都自己造一個出來。我們給自己設目標,寫一本書、贏一場球,短期也好,長期也好,都是大腦裡那套"目標追求裝置"設定的。我們並不真的被"傳宗接代"驅動,真正驅動我們的是別的目標,有些甚至稱得上高尚,比如想解開宇宙之謎、想搞懂意識、想弄明白大腦怎麼工作。這些目標離最底層的生物目標很遠,可那套能讓人設定高層目標的裝置,最初還是被自然選擇為了傳播DNA而裝進來的。

談到死亡,他說自己也常想這件事。真正讓他難過的,是看不到接下來會發生什麼。除了遺憾,還有一層更深的恐懼,是對"永恆"的恐懼。但永恆只有在你在場時才會讓你恐懼。我們出生之前的億萬年裡,我們等於已經死過了。他引用馬克·吐溫的話:出生前我死了幾十億年,從沒感到過一丁點不適。死後也一樣。既然永恆那麼可怕,度過它的最好方式就是全麻,而那正是我們死後會經歷的。

道金斯留給大家的最後一段話是這樣的:

"我們終將死去,而正是這一點,我們才成了幸運兒。絕大多數人永遠不會死,因為他們永遠不會出生。那些本可以站在我的位置上、卻永遠不會見到天日的人,數量比阿拉伯的沙粒還多。可以肯定,那些未出生的幽靈裡,有比濟慈更偉大的詩人,有比牛頓更偉大的科學家。我們知道這一點,因為DNA允許存在的人,數量遠遠超過實際出生的人。在這令人眩暈的機率面前,正是你和我,以我們的平凡,站在了這裡。我們是贏得出生彩票的少數幸運者,在一切機率都對我們不利的情況下贏了。面對那必然的迴歸,回到絕大多數人從未離開過的狀態,我們憑什麼抱怨?"(理查德·道金斯)

這場對話裡,道金斯始終在講同一件事:複雜從簡單裡長出來,要靠無數次的試錯和篩選,沒有一步登天的奇蹟。宇宙裡的生命如此,人腦如此,道德如此,觀念如此。接受這一點,人才會既謙卑又踏實。

可以帶走的幾條建議

  • 讀一讀達爾文原著,哪怕只是節選。道金斯說達爾文超前了一百年,除了遺傳學幾乎全對,這種"百年視野"能幫你建立演化思維的地基。
  • 碰到現有科學解釋不了的現象,第一反應應該是"需要更好的科學",而不是"所以是超自然"。前者是工作姿態,後者是躺平。
  • 看到陰謀論,別急著貼標籤一票否決,按證據逐條檢查。真正要問的是:需要多少人串通、需要多精確的細節、動機是什麼。
  • 留意自己身處哪個"網際網路村莊"。迴音室裡的人來自世界各地,卻用同一套術語、同一套熱情互相取暖,這不等於他們更接近真相。
  • 判斷一個觀點會不會流行,別隻看它對不對。真正決定傳播的是它夠不夠吸引人,真相只是眾多條件之一。
  • 想清楚你給自己設的目標是不是你真正想要的。那是自然選擇裝進大腦的裝置,但具體指向哪裡,你自己說了算。
  • 記住那張出生彩票。絕大多數可能的人從未出生,你站在這裡本身就是極小機率事件,抱怨之前先想想這一點。
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 Richard Dawkins, an evolutionary biologist and author of The Selfish Gene, The Blind Watchmaker, The God Delusion, The Magic of Reality and The Greatest Show of Earth, and his latest Outgrowing God. He is the originator and popularizer of a lot of fascinating ideas in evolutionary biology and science in general, including, funny enough, the introduction of the word meme and his 1976 book, The Selfish Gene, which in the context of a gene centric view of evolution, is an exceptionally powerful idea. [00:00:35] He's outspoken, bold and often fearless in the defense of science and reason, and in this way is one of the most influential thinkers of our time. This conversation was recorded before the outbreak of the pandemic for everyone feeling the medical, psychological and financial burden of this crisis. I'm sending love your way. Stay strong or in this together will beat this thing. This is the artificial intelligence podcast, if you enjoy it, subscribe on YouTube, review it with five stars, an app, a podcast, support on page or simply connect with me on Twitter. [00:01:10] And Lex Friedman spelled F.R. Eyed Man as usual. I'll do a few minutes of ads now and never any ads in the middle that can break the flow of the conversation. I hope that works for you and doesn't hurt the listening experience. The show is presented by Kashyap, the number one finance app in the App Store, when you get it, it collects podcast cash that lets you send money to friends by Bitcoin and invest in the stock market with as little as one dollar. [00:01:39] This cash app allows you to send and receive money digitally. Peer-to-peer security in all digital transactions is very important. Let me mention the PCI data security standard. A cash app is compliant with. I'm a big fan of standards for safety and security PCI. This is a good example of that. Or a bunch of competitors got together and agreed that there needs to be a global standard around the security of transactions. Now we just need to do the same for autonomous vehicles and artificial intelligence systems in general. [00:02:10] So, again, if you get cash up from the App Store or Google Play and use the Collects podcast, you get ten dollars in cash. Will also donate ten dollars. The first, an organization that is helping to advance robotics and stem education for young people around the world. And now here's my conversation with Richard Dawkins. Do you think there's intelligent life out there in the universe? Well, if we accept that there's intelligent life here and we accept that the number of planets in the universe is gigantic, I mean, 10 to 22 stars have been estimated, it seems to me, highly likely that there is not only life in the universe elsewhere, but also intelligent life. [00:03:08] If you deny that, then you're committed to the view that the things that happened on this planet are staggeringly improbable. I mean, ludicrously off the charts, improbable. And I don't think it's that improbable. Certainly the origin of life itself. There are really two steps, the origin of life, which is probably fairly improbable, and then the subsequent evolution to intelligent life, which is also. So the juxtaposition of those two, you could say, is pretty improbable, but not 10 to the 22 improbable. [00:03:37] It's an interesting question. Maybe you're coming onto it how we would recognize intelligence from outer space if we if we encountered it the most likely way we would come across them would be by radio. It's highly unlikely they'd ever visit us. But it's not it's not that unlikely that we would pick up radio signals and then we would have to have some means of deciding that it was intelligent. People have people involved in the city program discuss how they would do it. [00:04:06] And things like prime numbers would be an obvious thing to do and always an obvious way for them to broadcast to say we are intelligent, we are here. I suspect it probably would be obvious. Actually, it's interesting, prime numbers, so the mathematical patterns, it's an open question whether mathematics is the same for us as it would be for aliens. I suppose we could assume that ultimately, if we were governed by the same laws of physics and we should be governed by the same laws of mathematics. [00:04:37] I think so. I suspect that they will have Pythagoras Theorem, etc. and I don't think that mathematics will be that different. [00:04:43] Do you think evolution would also be a force on the alien planets? [00:04:48] I stuck my neck out and said that if we do, if ever, that we do discover life elsewhere, it will be Darwinian life in the sense that it will it will work by some kind of natural selection, the non-random survival of none of randomly generated codes. It doesn't mean that the genetic it would have to have some kind of genetics, but it doesn't have to be DNA. Genetics probably wouldn't be, actually, but it would I think it would have to be Darwinian. [00:05:13] Yes. Just some kind of selection process. Yes. In a general sense, it would be Darwinian. So let me ask kind of artificial intelligence engineering question. [00:05:25] So you've been an outspoken critic of, I guess, what could be called intelligent design, which is an attempt to describe the creation of a human mind body by some religious folks that religious folks used to describe. So broadly speaking, evolution is as far as I know. Again, you can correct me, is the only scientific theory we have for the development of intelligent life. Like there's no alternative theory as far as as far as I understand, none has ever been suggested, and I suspect it never will be. [00:05:56] Well, of course, whenever somebody says that 100 years later, I know it's a risk serious, but what about I mean, I bet he would look sorry. [00:06:07] Yes, it would probably look very similar, but it's almost like Einstein, general relativity versus Newtonian physics. It'll be maybe an alteration of the theory or something like that, but it won't be fundamentally different. [00:06:19] But OK, it so so now for the past so many years, even before the Academy has been trying to engineer intelligence in a sense to do what Intelligent Design says, you know, was done here on Earth. What's your intuition? Do you think it's possible to build intelligence, to build computers that are intelligent, or do we need to do something like the evolutionary process like this? There's no shortcuts here. That's an interesting question. I'm committed to the belief that is ultimately possible because I think there's nothing non-physical in our brains. [00:06:59] I think our brains work by far by the laws of physics. And so it must in principle be possible to replicate that. In practice, though it might be very difficult. And as you suggest it might, it may be the only way to do it is by something like an evolutionary process. I'd be surprised. I suspect that it will come, but it's certainly been slower in coming than some of the early pioneers I thought thought it would be. [00:07:23] Yeah, but in your sense, is the evolutionary process efficient? So you can see it as exceptionally wasteful in one perspective, but at the same time, maybe that is the only path is a paradox, isn't it? I mean, on the one side, it is deplorably wasteful. Yeah, it's fundamentally based on waste. On the other hand, it does produce magnificent results when the the the design of a soaring bird, an albatross, a vulture, an eagle is is superb. [00:07:55] An engineer would be proud to have done it. On the other hand, an engineer would not be proud to have done some of the other things that evolution has served up, some of the sort of botched jobs that you can easily understand because of their historical origins. [00:08:08] But they don't look well designed. [00:08:10] Joe, examples of bad design. [00:08:13] My favorite example is the recurrent laryngeal nerve I use this many times. This is a nerve. It's one of the cranial nerves which goes from the brain. And the end organ that it supplies is the voicebox, the the larynx. But it doesn't go straight to the last. It goes right down to the chest and then loops round an artery in the chest and then come straight back up again to the larynx. And I've assisted in the dissection of a giraffe neck, which happened to have died in a zoo. [00:08:41] And we watched the we saw the recurrent laryngeal nerve going whizzing straight past the larynx within an inch of the larynx down to the chest and then back up again, which is a detail of many feet, very, very inefficient. The reason is historical. The ancestors, our fish ancestors, the ancestor of all mammals and fish, the most direct pathway of that of the equivalent of that nerve. There was the larynx in those days, but it innovated part of the gills. [00:09:16] The most direct pathway was behind that artery, and then when the moment when the tetrapods, when they land vertebra started evolving and then the next started to stretch, the marginal cost of changing the embryological designed to jump that nerve over the artery was too great or rather was was each step of the way was was a very small cost, but the marginal but the cost of actually jumping it over would have been very large. As the neck lengthened, it was a negligible change to just increase the length, the length of the detail. [00:09:49] A tiny bit. A tiny bit. A tiny bit. Each millimeter at the time didn't make a difference. And so but finally, when you get to a giraffe, it's a huge detour and no doubt is very inefficient. Now, that's bad design. Any engineer would reject that piece of design. It's ridiculous. And there are quite a number of examples, as you would expect. It's not surprising that we find examples of that sort. In a way. [00:10:11] What's surprising is there aren't more of them in a way. What's surprising is that the design of living things is so good, so natural. Selection manages to achieve excellent results, partly by tinkering, partly by coming along and cleaning up initial mistakes and as it were, making the best of a bad job. That's really interesting. [00:10:32] I mean, it is surprising and beautiful, and it's a mystery from an engineering perspective that so many things are well designed. I suppose the thing we're forgetting is how many generations have to die for. [00:10:47] That's the inefficiency of it. Yes, that's the horrible wastefulness of it. [00:10:50] So we we marvel at the final product, but the process is painful. [00:10:57] It almost describes human beings as potentially the only cause. [00:11:01] The biological bootloader for artificial intelligence or artificial general intelligence is used as the term is kind of like superintelligence. [00:11:10] Do you see? Superhuman level intelligence is potentially the next step in the evolutionary process. Yes, I think that if superhuman intelligence is to be found, it will be artificial. I don't have any hope that we ourselves, our brains will go on, go on getting larger in ordinary biological evolution. I think that's probably come to an end. It is the dominant trend or one of the dominant trends in our fossil history for the last two or three million years says braises. [00:11:42] Yes. So it's been it's been swelling rather dramatically over the last two or three million years. That is unlikely to continue that. The only way that that's that happens is because natural selection favors those individuals with with the biggest brains. And that's not happening anymore. Right. [00:11:59] So in general, in humans, the selection pressures are not I mean, are they active in any form? [00:12:06] Well, in order for them to be active, it would be necessary that the most in intelligence, not that intelligence is simply correlated with brain size. [00:12:18] But let's let's talk about intelligence. In order for that to evolve, it's necessary that the most intelligent beings have the most individuals have the most children. And so intelligence may buy you money. It may buy you worldly success. It may buy you a nice house and a nice car and things like that. If you're successful career, it may buy you the admiration of your fellow people, but it doesn't increase the number of offspring that you have. It doesn't increase your genetic legacy to the next generation. [00:12:53] On the other hand, artificial intelligence, I mean, computers and technology generally is evolving by a non genetic means, by leaps and bounds, of course. [00:13:05] And so what do you think? I don't know if you're familiar with a company called Neural Link, but there's a general effort of brain computer interfaces, which is to try to build a connection between the computer in the brain to send signals, both directions and the long term dream there is to do exactly that, which is expand, I guess, expand the size of the brain, expand the capabilities of the brain. Do you do you see this as interesting? [00:13:32] And do you see this as a promising possible technology? Or is the interface between the computer and the brain like the brain? Is this wet, messy thing that's just impossible to interface with? Well, of course, it's interesting whether it's promising. I'm really not qualified to say. What I do find puzzling is that the brain being as small as it is compared to computer and the individual components being as slow as they are compared to our electronic components, it is astonishing what it can do. [00:14:02] I mean, imagine building a computer that that fits into the size of a human skull and with. [00:14:10] The equivalent of transistors on integrated circuits which work as slowly as neurons do. It's something mysterious about that, something something must be going on that we don't understand. So I've just talked to Roger Penrose. I'm not sure you familiar with his work. And he also describes this kind of mystery in the mind, in the brain that as he sees a materialist, so there's not there's no sort of mystical thing going on. But there's so much about the material, the brain that we don't understand that there might be quantum mechanical nature and so on. [00:14:51] So they're the ideas about consciousness. Do you have any have you ever thought about do you ever think about ideas of consciousness or a little bit more about the mystery of intelligence and consciousness that seems to pop up, just like you're saying, from our brain? [00:15:05] I agree with Roger Penrose that there is a mystery there. I. I mean, he's one of the world's greatest physicists, and I can't possibly argue with his, but nobody knows anything about consciousness. And in fact, you know, if we talk about religion and so on, some of the mystery of consciousness is so inspiring and we know so little about it that the leap to sort of religious or mystical explanations is too easy to make. [00:15:36] I think that it's just an act of cowardice to leap to religious explanations, but it doesn't do that, of course. But I accept that there may be something that we don't understand about it. [00:15:48] So correct me if I'm wrong, but in your book, Selfish Gene, the the gene centered view of evolution, it allows us to think of the physical organisms as just the medium through which the software. [00:16:00] Of our genetics and the ideas sort of propagate. So maybe can we start just with the basics? What in this context does the word meme mean? [00:16:14] It would mean the cultural equivalent of a gene cultural equivalent in the sense of that which plays the same role as the gene in the transmission of culture and the transmission of ideas in the broadest sense. And it's only a useful word if there's something Darwinian going on. Obviously, culture is transmitted, but is there anything Darwinian going on? And if there is, that means there has to be something like a gene which which becomes more numerous or less numerous in the population. [00:16:45] So it can replicate. It can replicate. Well, it clearly does replicate. There's no question about that. The question is, does it replicate in the sort of differential way in a Darwinian fashion? Could you say that certain ideas propagate because they're successful in the meme pool in a sort of trivial sense? You can. Would you wish to say, though, that in the same way as an animal body is modified, adapted to serve as a machine for propagating genes, is it also a machine for propagating these? [00:17:18] Could you actually say that something about the way a human is is is modified, adapted for the function of beam propagation? That's such a fascinating possibility. If that's true, if that it's not just about the genes, which seems somehow more comprehensible, that these things of biology, the the the idea that culture or maybe ideas, you can really broadly define it. [00:17:47] Yes. Operates under these mechanisms, even even morphology, even anatomy does does evolve by biomimetic means. I mean things like hairstyles, styles of makeup, circumcision. These things are actual changes in the body form. Yes. Which are not genetic and which get passed on from generation to generation or sideways like a virus, um, in a quasi genetic way. But the moment you start drifting away from the physical, it becomes interesting because a space of ideas, ideologies, political systems, of course. [00:18:27] Yes. So what's what in your what's your sense is, um, are memes a metaphor more or are they really is there something fundamental, almost physical presence of memes? [00:18:41] Well, I think they're a bit more than a metaphor. And and I think that I mentioned the physical bodily characteristics, which are critical in a way. [00:18:50] But when things like the propagation of religious ideas, um, both longitudinally down generations and transversely, as in a sort of epidemiology of of ideas, when a charismatic preacher converts people, that that's that resembles viral transmission, whereas the longitudinal transmission from grandparent, parent to child, et cetera, is is more like conventional genetic transmission. [00:19:24] That is such a beautiful expression, especially in the modern day idea. [00:19:28] Do you think about this implication in social networks where the propagation of ideas, the viral propagation of ideas and hence the new use of the word meme to describe the Internet, of course, provides extremely rapid method of transmission. [00:19:44] And before, when I first coined the word, the Internet didn't exist. And so I was thinking that in terms of books, newspapers, radio, television and that kind of thing, now an idea can just leap around the world in all directions instantly. And so the Internet provides a step change in the facility of propagation of memes. How does that make you feel? Isn't it fascinating the sort of ideas it's like you have Galapagos Islands or something is the 70s and the Internet allowed all these species to just like globalize. [00:20:25] And in a matter of seconds, you could spread the message to millions of people. And these ideas, these memes can breed, can evolve, can mutate, and there's a selection and there's like different, I guess, groups that have all the dynamics. That's fascinating. Who do you think? Yes. [00:20:46] Basically, do you think your work in this direction, while fundamentally was focused on life on Earth, do you think it should continue like yours when I do think it would probably be a good idea to think in a Darwinian way about. [00:21:00] This sort of thing, we conventionally think of the transmission of ideas from an evolutionary context as being limited to where our ancestors, people living in villages, living in small bands where everybody knew each other and ideas could propagate within the village, and they might hop to a neighboring village occasionally and maybe even to a neighboring continent eventually. And that was a slow process. Nowadays, villages are international. I mean, you have people it's been called echo chambers where people are in a sort of Internet village where the other members of the village may be geographically distributed all over the world, but they just happen to be interested in the same things, use the same terminology, the same jargon, have the same enthusiasms that people like the Flat Earth Society. [00:21:58] They don't all live in one place. They find each other and they talk the same language to each other. They talk the same nonsense to each other. And they but so this is a kind of distributed version of the primitive idea of of people living in villages and propagating their ideas in the local way. [00:22:16] Is there is there Darwinist parallel parallel here. [00:22:19] So is there evolutionary purpose of villages or is that just the I wouldn't use the word like evolutionary purpose in that case, but villages or villages will be something that just emerge. That's the way people happen to live. [00:22:32] And in just the same kind of way, the flat earth society societies of ideas emerge in the same kind of way in this digital space. [00:22:43] Yes, yes. There's something interesting to say about the. I guess. From a perspective, a Darwin, could we fully interpret the dynamics of social interaction in these social networks or is there are some much more complicated things need to be developed? Like what's your sense? [00:23:06] Well, a Darwinian selection idea would involve investigating which ideas spread in which which don't. So in some ideas don't have the ability to spread. I mean, flat earth, flat earth ism is there are a few people believe in it, but there's not going to spread because of the obvious nonsense. But other ideas, even if they are wrong, can spread because they are attractive in some sense. So the spreading in the selection, in the Darwinian context is it just has to be attractive as some sense. [00:23:42] Like you don't have to define it. It doesn't have to be attractive in the way that animals attract each other. It can be attractive in some other way. Yes, it's all it matters is all it's needed is rich spread and it doesn't have to be true. To spread in truth is one criterion which might help an idea to spread. But there are other criteria which might help it to spread. As you say, attraction in animals is not necessarily valuable for survival. [00:24:09] Celebrating the famous peacock's tail. Yeah, doesn't help the peacock to survive. It helps it to pass on its genes. Similarly, an idea which is actually rubbish but people don't know is rubbish and think is very attractive will spread in the same way as a peacock's gene spread as a small step. [00:24:28] I remember reading somewhere I think recently that in some species of birds, sort of the idea that beauty may have its own purpose and the idea that some. Some birds. [00:24:44] I'm being ineloquent here, but there is some aspects of their feathers and so on that serve no evolutionary purpose whatsoever, somebody making an argument that there are some things about beauty that animals do that may be its own purpose, that does that ring a bell for you is ridiculous. [00:25:04] I think it's rather distorted. [00:25:05] Bill Darwin, when he coined the phrase sexual selection, I didn't feel the need to suggest that what was attractive to females usually is males attractive enough that what females found attractive had to be useful. He said it didn't have to be useful. It was enough that females found it attractive and so it could be completely useless, probably was completely useless in the conventional sense, but was not at all useless in the sense of passing on some genes. But instead of reproducing others, starting with Wallace, the co discoverer of natural selection, didn't like that idea, and they wanted sexually selected characteristics like peacocks tails to be in some sense useful. [00:25:56] It's a bit of a stretch to think of. A peacock's tail would be useful, but in the sense of survival. But others have run with that idea and have brought it up to date. And so there's a kind of there are two schools of thought on sexual selection which are still active and about equally supported. Now, those who follow Darwinian thinking that it's just enough to say it's attractive and those who follow Wallace and say that it has to be in some sense useful. [00:26:25] Do you fall into one category or the other? [00:26:28] No, I'm reminded. I think they both could be correct in different cases. Well, I mean, they've both been made sophisticated in a mathematical sense, more so than when they first started talking about it. I'm Russian, I romanticize things. So I prefer the former. [00:26:44] Yeah, or the or the beauty in itself is a powerful attraction, is a powerful force in evolution and religion. [00:26:57] Do you think there will ever be a time in our future where almost nobody believes in God or God is not a part of the moral fabric of our society? Yes, I do. I think it may happen after a very long time. I think it may take a long time for that to happen. So do you think ultimately for everybody on Earth, religion, other forms of doctrines, ideas could do a better job than what religion does? [00:27:25] Yes, I mean, following truth, truth, truth is a funny, funny word and reason to there's yeah. It's a it's a difficult idea now with truth and the Internet. Right. And fake news and so on. I suppose when you say reason you mean the very basic sort of inarguable conclusions of science versus which political system is better. [00:27:55] Yes, yes. I mean, truth about the real world, which is ascertainable by not just by the more rigorous methods of science, but by just ordinary sensory observation. [00:28:10] So do you think there will ever be a time when we move past it, like, I guess another way to ask it. [00:28:16] Are we hopelessly, fundamentally tied to religion in the way our society functions? [00:28:26] Well, clearly, all individuals are not hopelessly tied to it because many individuals don't believe you could mean something like society needs religion in order to function properly or something like that. And some people have suggested that. What's your intuition on that? [00:28:43] Well, I've read books on it and they're persuasive. I don't think they're that persuasive, though. I mean, some people suggested that society. Needs a sort of figurehead which can be a non-existent figurehead in order to function properly. I think there's something rather patronizing about the idea that, well, you and I are intelligent enough not to believe in God, but the plebs need it sort of thing. And I think that's patronizing. And I'd like to think that that was not the right way to proceed. [00:29:18] But at the individual level, do you think there's some value of spirituality? [00:29:26] Sort of. If I think of as a scientist, the amount of things we actually know about our universe is tiny, tiny, tiny percentage of what we could possibly know. So just from everything, even the certainty we have about the laws of physics, it seems to be that there's a huge amount to discover. And therefore we're sitting where ninety nine point ninety nine percent of things are just still shrouded in mystery. Do you think there's a role in a kind of spiritual view of that sort of a humbled spiritual? [00:29:57] I think it's right to be humble. I think it's right to admit that there's a lot we don't know, a lot we don't understand a lot that we still need to work on. We're working on it. What I do not think is that it helps to invoke supernatural explanations. What we found, if our current scientific explanations aren't adequate to do the job, then we need better ones. We need to work more. And of course, the history of science shows just that, that as science goes on, problems get solved one after another and the science advances as science gets better. [00:30:30] But to invoke an a non-scientific, non-physical explanation is simply to lie down in a cowardly way and say we can't solve it. So we're going to invoke magic. Don't let's do that. Let's say we need better science. We need more science. It may be that the science will never do it. It may be that we will never actually understand everything. And that's OK. But let's keep working on it. A challenging question there is, do you think science can lead us astray in terms of the humbleness? [00:31:01] There's some aspect of science, maybe aspect of scientists and our science, but of sort of a mix of ego and confidence that can lead us astray in terms of discovering the, you know, some of the big open questions about. Yes, about the universe. [00:31:22] I think that's right. I mean, there are there are arrogant people in any walk of life, and scientists are no exception to that. And so there are arrogant scientists who think we solved everything. Of course we haven't. So humility is a proper stance for a scientist. I mean, it's a proper working stance because it encourages further work. But in a way, to resort to a supernatural explanation is a kind of arrogance because it's saying, well, we don't understand it scientifically. [00:31:49] Therefore, the non-scientific religious supernatural explanation must be the right one. And that's arrogant. What is what is humble is to say we don't know and we need to work further on it. So maybe if I get psychoanalyze you for a second, you have at times been just slightly frustrated with people who have supernet. [00:32:13] You have a supernatural. [00:32:15] How has that changed over the years? Have you become how do people that kind of have cacique, supernatural explanations, how do you see those people as human beings, as you see them as dishonest? Do you see them as. Sort of ignorant, do you see them as, I don't know, like what? I mean, how do you think of so they're not not not dishonest. And I mean, obviously many of them are very nice people. [00:32:46] I don't I don't sort of despise them in that sense. I think it's often a misunderstanding that that people will jump from the admission that we don't understand something, they will jump straight to what they think of as an alternative explanation, which is the supernatural one, which is not an alternative. It's a non explanation. Instead of jumping to the conclusion that science needs more work, that we need to actually do some better, better science. So I don't have I mean, my personal antipathy towards such people, I just think that they're misguided. [00:33:28] So what about this really interesting space that I have trouble with? So religion I have a better grasp on. But there's a large community, like you said, flat earth community that have recently because I've made a few jokes about it. I saw that there's I've noticed that there's people that take it quite seriously. So there's this bigger world of conspiracy theorists, which is a kind of I mean, there's elements of it. There are religious as well. [00:34:01] But I think there are also scientific. So the basic credo of a conspiracy theorist is to question everything, which is also the credo of a good scientist, I would say. So what do you make of this? I mean, I think it's probably too easy to say that by labeling something a conspiracy, you therefore dismiss it. I mean, occasionally conspiracies are right. And so we shouldn't dismiss conspiracy theories out of hand. We should examine them on their own merits. [00:34:34] Flat Earth ism is obvious nonsense. We don't have to examine that much further. But I mean, there may be other conspiracy theories which are actually right. [00:34:44] So I've Googled grew up in the Soviet Union. And, you know, the space race was very influential for me and both sides of the coin. You know, there's a conspiracy theory that we never went to the moon. Right. And. It's it's like I can understand it, and it's very difficult to rigorously, scientifically show one way or the other, it's just you have to use some of the human intuition about who would have to lie, who would have to work together. [00:35:12] And it's clear that very unlikely. Good behind that is my general intuition that most people in this world are good. You know, in order to really put together some conspiracy theories. There has to be a large number of people working together and essentially being dishonest. Yes, which is improbable. The sheer number, who would have to be in on this conspiracy and the sheer detail, attention to detail they'd have had to have had and so on. I'd also worry about the motive. [00:35:43] And why would anyone want to suggest that it didn't happen? What's the what's the why is it so hard to believe? I mean, the the physics of it, the mathematics of it, the the idea of computing all bits and trajectories and things, it all works mathematically. Well, why wouldn't you believe it? [00:36:01] It's a psychology question because there's something really pleasant about, you know, pointing out that the emperor has no clothes when everybody like, you know, thinking outside the box and coming up with a true answer where everybody else is deluded. There's something. Yeah, I mean, I have them for science, right. You want to prove the entire scientific community wrong. That's the whole now. That's right. [00:36:24] That's right. And of course, historically, lone geniuses have come out, right? Sometimes, yes. But often people who think they're alone genius for much more often turn out not to. So you have to judge each case on its merits. The mere fact that you're a maverick, the mere fact that you you're going against the current tide doesn't make you right. You've got to show you're right by looking at the evidence. [00:36:47] So because you focus so much on religion and disassembled a lot of ideas there. And I just I was wondering if you have ideas about conspiracy theory groups because it's such a prevalent even reaching into presidential politics and so on. It seems like it's a very large community, I believe different kinds of conspiracy theories. Is there some connection there to your thinking on religion and or is it curious? [00:37:13] It's a matter it's an obviously difficult thing. I don't understand why people believe things that are clearly nonsense, like, well, flat earth and also the conspiracy about not landing on the moon or that the that the United States engineered 9/11, that that kind of thing. [00:37:34] So it's not clearly nonsense. [00:37:36] It's extremely unlikely. [00:37:38] So it's extremely unlikely that religion is a bit different because it's passed down from generation to generation. And so many of the people who are religious got it from their parents, who got it from their parents, who got it from their parents. And childhood indoctrination is a very powerful force. But these things like the 9/11 conspiracy theory, the Kennedy assassination conspiracy theory, the man on the moon conspiracy theory, these are not childhood indoctrination. These are, um, presumably dreamed up by somebody who then tell somebody else who then wants to believe it. [00:38:18] And I don't know why people are so eager to fall in line with some just some person that they happen to read or meet who spin some yarn. I can kind of understand why they believe what their parents and teachers told them when they were very tiny and not capable of critical thinking for themselves. So I sort of get why. The great religions of the world, like Catholicism and Islam, go on persisting, it's because of childhood indoctrination, but that's not true of flat earth ism. [00:38:51] And sure enough that atheism is a very minority cult where larger than I ever realized. [00:38:57] Well, yes, I know, but that's a really clean idea you've articulate in your new book. And and I'll go on God and in God Delusion is the early indoctrination. That's really interesting. You can get away with a lot of other ideas in terms of religious texts. If the age at which you convey those ideas, the first is a young age. So indoctrination is sort of an essential element of propagation of religion. So let me ask on the morality side, in the books that I mentioned, God Delusion, Al Gore and God, you describe that human beings don't need religion to be moral. [00:39:37] So from an engineering perspective, we want to engineer morality into A.I. systems. So in general, where do you think morals come from in humans? A very complicated and interesting question. It's clear to me that the moral standards, the moral values of our civilization changes. As the decades go by, certainly as the centuries go by, even as the decades go by and. We in the 21st century are quite clearly labeled 21st century people in terms of our moral values. [00:40:22] There's a spread. I mean, some of us are a little bit more ruthless, some of us more conservative, some of us more more liberal and so on. But we all subscribe to pretty much the same views when you compare us with, say, 18th century, 17th century people, even 19th century, 20th century people. So. We're much less racist, we're much less sexist and so on than we used to be, some some people are still racist and some are still sexist, but the spread has shifted that the Gaussian distribution has moved and moves steadily as the centuries go by. [00:40:59] And that is the most powerful. [00:41:04] Influence I can see on our moral values, and that doesn't have anything to do with religion. I mean, the the religion, the story, the morals of the Old Testament are. [00:41:16] Bronze Age models morals that deplorable, and they are to be understood in terms of the people in the desert who made them up at the time and said human sacrifice, an eye for an eye, a tooth for a tooth, petty revenge, killing people for breaking the Sabbath, all that kind of thing inconceivable now. [00:41:41] So at some point, religious text may have in part reflected that Gaussian distribution at that idea. I'm sure they always reflect that. Yes. And then. Now but the sort of almost like the meme, as you describe it, of ideas moves much faster than religious text of the new religion. Yes. So basically, your morals on on religious text, which were written millennia ago, is not a great way to proceed. I think that's pretty clear. [00:42:10] So not only should we not get our morals from such text, but we don't. We quite clearly don't. If we did, then we we'd be discriminating against women and we'd be we'd be racist, we'd be killing homosexuals and so on. So so we don't and we shouldn't. Now, of course, it's possible to bother to use the 21st century standards of morality. And you can look at the Bible and you can cherry pick particular verses which conform to our modern morality. [00:42:45] And you'll find that Jesus has a pretty nice things, which is great, but. You're using your 21st century morality to decide which verses to pick, which verses to reject, and so why not cut out the middleman of the Bible and go straight to the 21st century morality, which is. Where that comes from is a much more complicated question why is it that morality and moral values change as the centuries go by? The undoubtedly do. And it's a very interesting question to ask. [00:43:17] Why it? It's another example of cultural evolution just as technology progresses. So moral values progress for probably very different reasons. But it's interesting if the direction in which the progress is happening has some evolutionary value or if it's merely a drift that can go into any direction, I'm not sure it's any direction and I'm not sure it's evolutionarily valuable. What it is is progressive in the sense that each step is a step in the same direction as the previous step. [00:43:47] So it becomes more gentle, more decent by modern standards, more liberal, less violent, but more decent. I think you're using terms in interpreting everything in the context of the 21st century. Yeah, because Genghis Khan would probably say that this is now more decent because we're now you know, there's a lot of weak members of society. Exactly. We're not. Yes. And I was careful to say by by the standards, the 21st century, by by our standards, if we with hindsight, look back at history, what we see is a trend in the direction towards us, towards our present right are present value for us. [00:44:24] We see progress. But it's an open question whether I want you know, I don't see necessarily why we can never return to Genghis Khan. Well, we could. I suspect we won't. But it but if you look at the history of moral values over the centuries, it isn't a progressive. I use the word progressive, not a value judgement sense in that sense of of a transitive sense. Each step is the same in the same direction of the previous step. [00:44:54] So things like we don't derive entertainment from torturing cats. We don't derive entertainment from from like the Romans did in the Colosseum from from that state or rather or rather, we suppress the desire to get I mean, to have it's probably in a somewhere. So there's a bunch of parts of our brain, one that probably, you know, limbic system that wants certain pleasures. [00:45:24] And that's I don't I mean, I wouldn't have said that. But you are at liberty to think that, like, well, there's a there's a Den Carlin of hardcore history. [00:45:35] There's a really nice explanation of how we've enjoyed watching the torture of people, the fighting of people, just the torture, the suffering of people throughout history as entertainment until quite recently. [00:45:47] And now everything we do with sports, we're kind of channeling that feeling into something else. So, I mean, there is some dark aspects of human nature. There are underneath everything. And I do hope this like higher level software we've built will keep us at bay. [00:46:04] Yes, I'm also Jewish and have a history with the Soviet Union and the Holocaust. And I clearly remember that some of the darker aspects of human nature creep up there. [00:46:16] They do. There have been there have been steps backwards, admittedly, and the Holocaust is an obvious one. But if you take a broad view of history, it's exactly the same direction. [00:46:28] So Pamela MacCormick in Machines who think has written that I began with an ancient wish to forge the gods. Do you see the poetic description? I suppose. But do you see a connection between our civilizations, historic desire to create gods, to create religions and our modern desire to create technology and intelligent technology? [00:46:52] I suppose there's a link between an ancient disaster. Explain away mystery and and science, but what artificial intelligence, creating gods, creating new gods, I mean, I forget I read somewhere a somewhat facetious paper which said that we have a new God is called Google. And and and we we pray to it and we worship it. And we when we ask its advice like an oracle and so on, that's fun. [00:47:25] And we don't see that. You see that as a fun statement of facetious them. You don't see that as a kind of truth of us creating things that are more powerful than ourselves and natural. It has a kind of poetic resonance to it, which I get. But I would. I wouldn't. But no, I wouldn't. I wouldn't have bothered to make the point myself that way. [00:47:45] All right. So you don't think I will become our new guy, a new religion, and you go to Google? Well, yes. [00:47:52] I mean, I can see that. The future of intelligent machines or indeed intelligent aliens from outer space might yield beings that we would regard as gods in the sense that they are so superior to us that we might as well worship them. That's highly plausible, I think, but. I see a very fundamental distinction between a God who is simply defined as something very, very powerful and intelligent on the one hand, and a God who doesn't need explaining by a progressive step by step process like evolution or like or like engineering design. [00:48:35] So the different. So suppose we did meet an alien from outer space who was marvelously, magnificently, more intelligent than us, and we would sort of worship it. And for that reason, nevertheless, it would not be a God in the very important sense that it did not just happen by to be there like God is supposed to. It must have come about by a gradual, step by step incremental progressive process, presumably like Darwinian evolution. There's all the difference in the world between those two. [00:49:11] Intelligence design comes into the universe late as a product of a progressive evolutionary process or progressive engineering design process. So most of the work is done through the slow moving. Exactly. Program. Exactly. Yeah, the yeah, but there's still this desire to get answers to the why question that if we're if the world is a simulation, if we're living in a simulation that there's a programmer like creature that we can ask questions of, like, well, let's put let's pursue the idea that we're living in a simulation which is not not totally ridiculous, by the way. [00:49:54] And we go then you still need to explain the programmer, the program. I had to come into existence by some the I mean, even if we're in a simulation, the programmer must have evolved or if if he's in a sort of machine or she if she is she's in a better simulation, then the meta metaprogramming must have evolved by a gradual process. You can't escape that fundamental. You've got to come back to a gradual, incremental process of explanation to start with. [00:50:31] There's no shortcuts in this world of network. [00:50:34] But maybe to linger on that point about the simulation, do you think it's an interesting, basically, Dr. Boorda, the heck out of everybody asking this question, but whether you live in a simulation, do you think first, do you think we live in a simulation? Second, do you think it's an interesting thought experiment? It's certainly an interesting thought experiment. I first met it in a science fiction novel by Daniel Galai called Counterfeit World, in which. [00:51:09] It's all about I mean, our heroes are running a gigantic computer which which simulates the world and and something goes wrong. And so one of them has to go down into the simulated world in order to fix it. And then the the denouement of the thing, the climax of the novel is that they discover that they themselves are in another simulation at at a high level. So I was intrigued by this. And I love. Others have Daniel Gauloise science fiction novels, then it was revived seriously by Nick Bostrom. [00:51:40] Bostrom talking to him in an hour. Okay. And he goes further. Not just treat it as a science fiction speculation. He actually thinks it's positively likely. Yeah, I mean I think it's very likely actually. [00:51:54] Well, he makes a good probabilistic argument, which you can use to come up with very interesting conclusions about the nature of this universe. [00:52:01] I mean, he think he thinks that the. That we are in a simulation done by the descendants of a future products, but it's still a product of evolution, it's still ultimately going to be a product of evolution, even though the super intelligent people of the future have created our world. [00:52:22] And you and I are just a simulation on this table is a simulation and so on. I don't actually, in my heart of hearts believe it, but but I like his argument was that the interesting thing is that I agree with you. But the interesting thing to me, if I would say if we're living in a simulation that in that simulation to make it work, you still have to do everything gradually, just like you said that even though it's programmed, I don't think there can be miracles. [00:52:51] Well, no, I mean, the programmer, the higher up the upper ones have to have evolved gradually. However, the simulation they create could be instantaneous. I mean, it could be switched on and we come into the world with fabricated memories. But what I'm what I'm trying to convey is you're seeing the broader statement. But I'm saying from an engineering perspective, both the programmer has to be slowly evolved and the simulation because it's like, oh, yeah, from an engineering perspective, yeah. [00:53:20] It takes a long time to write a program, you know, like just I don't think you can create the universe in a snap. I think you have to grow it. [00:53:29] OK, well, that's that's a good point. That's an arguable point. By the way, I have thought about using the Nick Bostrom idea to solve the riddle of how you were talking. We were talking earlier about why the human brain can achieve so much. Um, I thought of this when my then 100 year old mother was marvelling at what I could do with it with a smartphone. And I could, you know, look up anything in the encyclopedia. [00:54:00] I could play her music that she liked. And so we all that in that tiny little thing. Now it's out there in the clouds. And maybe what most of what we do is in a cloud. So maybe if it was if we are a simulation. Yeah. Then all the power that we think is in our skull, it actually may be like the power that we think is in the iPhone. But is that actually out there in an interface to something else? [00:54:25] Yeah, I mean, that's what the including Roger Penrose with sarcasm, that consciousness is somehow a fundamental part of physics that it doesn't have to actually all reside inside. But Roger thinks it does reside in the skull, whereas I'm suggesting that it doesn't. But that that that that there's a cloud. [00:54:45] There'd be a fascinating, fascinating notion and a small tangent. Are you familiar with the work of Donald Halfman? I guess maybe nothing is named correctly, but just forget the name. The idea that there's a difference between reality and perception. So like we are, biological organisms perceive the world in order for the natural selection process to be able to survive and so on. But that doesn't mean that our perception actually reflects the fundamental reality, the physical reality underneath. [00:55:21] Well, I do think that although it reflects the fundamental reality, I do believe there is a fundamental reality. Um, I do think that what the perception is constructive in the sense that we construct in our minds a model of what we're seeing. And so and this is really the view of people who work on visual illusions, like Richard Gregory, who point out the things like Aneka Cube, um, which flip from two dimensional picture of a cube on on on sheet of paper. [00:55:58] We see it as a three dimensional cube and it flips from one orientation to another at regular intervals. What's going on is that the brain is is constructing a cube, but the sense data are compatible with two alternative cubes. And so rather than stick with one of them, it alternates between them. I think that's just a model for what we do all the time. When we see a table, when we see a person, when we see when we see anything, we're using the sense data to construct or make use of a perhaps previously constructed model. [00:56:33] Um, I noticed this when when I meet somebody who actually is, say, a friend of mine. But I until I kind of realized that that is him, he looks different. And then when I finally clock that, it's him. [00:56:50] His features switch like a neck and cube and just into the familiar form, as it were, I've taken his face out of the filing cabinet inside and grafted it onto or used used the census data to to to you to to invoke it. [00:57:06] Yeah, we did some kind of miraculous compression on this whole thing to be able to filter out most of the sun's data and makes it make sense. That's just the magical thing that we do. So you've written several, many amazing books. But let me ask, what books, technical or fiction or philosophical, had a big impact on your own life? What what books would you recommend people consider reading in their own intellectual journey? Darwin, of course, and the original of actually ashamed to say, I've never read Darwin is amazingly prescient because considering he was writing in the middle of the 19th century, Michael Geeslin said he's working one hundred years ahead of his time. [00:57:56] Everything except genetics is amazingly right and amazingly far ahead of his time. Um, and of course, you need to read the update things that have happened since his time as well. I mean, he would be astonished by. Well, let alone Watson and Crick, of course, but he be astonished by Mendelian genetics as well. Fascinating to see what he thought about what he would think about. [00:58:25] Oh, I mean, yes, it would, because in many ways it clears up what appeared in his time to be a riddle. [00:58:35] The digital nature of genetics clears up what what was a problem? [00:58:40] What's the big problem? Gosh, there's so much that I could think of that I can't really find there. Is there something outside sort of more fiction? Is there when you think young, was there books that just kind of outside of the realm of science and religion, they just kind of sparked your. Yes. Well, actually, I have I suppose I could say that I've learned some. Some science from science fiction. I meant I meant I mentioned Daniel Gallo, and that's one example, but another of his novels. [00:59:14] Cold, dark universe, which is not terribly well known, but it's a very, very nice science fiction story, it's about a world of perpetual darkness. And we don't we're not told the beginning of the book why these people are in darkness. They stumble around in some kind of underground world of caverns and passages using echolocation like bats and whales to get around. And they've adapted, presumably by Darwinian means, to survive in perpetual total darkness. But what's interesting is that their mythology, their religion. [00:59:50] Has echoes of Christianity, but it's based on light, and so there's been a fall from a from a and a paradise world that once existed, where light reigns supreme and because of the sin of mankind, light banish them. So then they no longer are in lights, presents. But but light survives in the form of mythology and in the form of sayings like the great light or mightier the light lights don't do that. And I. And I hear what you mean rather than I see what you mean, what you mean. [01:00:25] So some of the same religious elements are present in this other totally kind of absurd different form. Yes. And so it's a wonderful I wouldn't call it satire because it's too good natured for that. And a wonderful parable about Christianity and the doctrine, the theological doctrine of the fall. So I find that that kind of science fiction immensely stimulating. Fred Hoyle's The Black Cloud. [01:00:50] Oh, by the way, anything by Arthur C. Clarke I find very, very wonderful to Fred Hollows, The Black Cloud, his first science fiction novel where he. Well, I learned that I learned a lot of science from that. It has it suffers from an obnoxious hero, unfortunately. But apart from that, you learn a lot of science from it. Um, another of his novels, APHA Andromedan, which, by the way, they did the theme of that is taken up by Carl Sagan science fiction novel, another wonderful writer, Carl Sagan. [01:01:26] Contact where the idea is again. [01:01:30] We will we will not be visited from outer space by physical bodies. We will be visited possibly. We might be visited by radio, but the the radio signals could manipulate us and actually have a concrete influence on the world if they make us or persuade us to build a computer which which runs their software so they can then transmit their software by by radio and then the computer takes over the world. And this is the same theme in both Hoyle's book and Sagan's book. [01:02:06] I presume them I don't want to take a new buttholes book, probably did. And but it's a clever idea that we will never be invaded by physical bodies. War of the Worlds of H.G. Wells will never happen. But we could be invaded by radio signals, a code coded information, which is sort of like DNA. And, you know, we are. We are we are called them. We are survival machines of our DNA. So it has great resonance for me because I think of us, I think of bodies, physical bodies, biological bodies as being manipulated by coded information in DNA, which has come down through through generations. [01:02:53] And in a space of Meems, it doesn't have to be physical. It can be transmitted to other information. Yes, that's a fascinating possibility that from outer space, we can be infiltrated by other means, by other ideas, and thereby controlled in that way. Let me ask the last, the silliest or maybe the most important question. What is the meaning of life? [01:03:19] What gives your life fulfillment happiness, I mean, from a scientific point of view, the meaning of life is the propagation of DNA, but that's not what I feel. That's not the meaning of my life. So the meaning of my life is something which is probably different from yours and different from other peoples. But we we each make our own meaning. So we we we set up goals we want to achieve. We want to write a book. We want to. [01:03:46] Do whatever it is we do right at. Quartet, we want to win a football match, and these are these are short term goals. Well, maybe quite long term goals which are set up by our brains, which have goals seeking machinery built into them. But what we feel, we don't feel motivated by the desire to pass on our DNA mostly. We have other other girls, which can be very moving, very important. They could even be called it's called spiritual in some cases. [01:04:20] We want to understand the riddle of the universe. We want to understand consciousness. We want to understand how the brain works. These are all noble goals. Some of them can be noble goals anyway. And they are a far cry from the fundamental biological goal, which is the propagation of DNA, but the machinery that enables us to set up these. Higher level goals is originally programmed into us by natural selection of DNA, the propagation of DNA. [01:04:53] But what do you make of this unfortunate fact that we are mortal? [01:04:59] Do you ponder your own mortality? Does it make you sad? [01:05:03] I, I ponder it. It would it makes me sad that I shall have to leave and not see what's going to happen next. Um, if there's something frightening about mortality, apart from sort of missing, as I've said, something more deeply, darkly frightening, it's the idea of eternity. But eternity is only frightening if you're there to eternity. But before we were born, billions of years before we were born, and we were effectively dead before we were born, as I think it was, Mark Twain said I was dead for billions of years before I was born and never suffered the smallest inconvenience. [01:05:43] That's how I was going to be afterward after we leave. So I think of it as really eternity is a frightening prospect. And so the best way to spend it is under a general anesthetic, which is what it'll be. Beautifully put, Richard, as a huge honor to meet you, to talk to you. Thank you so much for your time. Thank you very much. [01:06:04] Thanks for listening to this conversation, Richard Dawkins, and thank you to our presenting sponsor, Kashyap. Please consider supporting the podcast by downloading Kashyap and Usenko Lux podcast. If you enjoy this podcast, subscribe on YouTube. Review of Five Stars and Apple podcast support on Patrón or simply connect with me on Twitter, Allex Friedman. And now let me leave you with some words of wisdom from Richard Dawkins. We are going to die and that makes us the lucky ones. [01:06:35] Most people are never going to die because they are never going to be born. The potential people who could have been here in my place, but who will in fact never see the light of day outnumber the sand grains of Arabia. Certainly, those unborn ghosts include greater powers than Keats scientists greater than Newton. We know this because the set of possible people allowed by our DNA so massively exceeds the set of actual people in the teeth of these stupefying odds. [01:07:06] It is you and I in our ordinariness that are here we privileged few who won the lottery of birth against all odds. [01:07:17] How dare we whine at our inevitable return to that prior state from which the vast majority have never stirred? Thank you for listening and hope to see you next time.

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