#221 – Douglas Lenat: Cyc and the Quest to Solve Common Sense Reasoning in AI

Lex Fridman Podcast

Lex Fridman에서 제공하는 콘텐츠입니다. 에피소드, 그래픽, 팟캐스트 설명을 포함한 모든 팟캐스트 콘텐츠는 Lex Fridman 또는 해당 팟캐스트 플랫폼 파트너가 직접 업로드하고 제공합니다. 누군가가 귀하의 허락 없이 귀하의 저작물을 사용하고 있다고 생각되는 경우 여기에 설명된 절차를 따르실 수 있습니다 https://ko.player.fm/legal.

4y ago

MP3•에피소드 홈

Fetch error

Hmmm there seems to be a problem fetching this series right now. Last successful fetch was on September 04, 2025 21:02 (11d ago)

What now? This series will be checked again in the next day. If you believe it should be working, please verify the publisher's feed link below is valid and includes actual episode links. You can contact support to request the feed be immediately fetched.

Douglas Lenat is the founder of Cyc, a 37 year project aiming to solve common-sense knowledge and reasoning in AI. Please support this podcast by checking out our sponsors:
– Squarespace: https://lexfridman.com/squarespace and use code LEX to get 10% off
– BiOptimizers: http://www.magbreakthrough.com/lex to get 10% off
– Stamps.com: https://stamps.com and use code LEX to get free postage & scale
– LMNT: https://drinkLMNT.com/lex to get free sample pack
– ExpressVPN: https://expressvpn.com/lexpod and use code LexPod to get 3 months free

EPISODE LINKS:
Douglas’s Twitter: https://twitter.com/cycorpai
Cyc’s Website: https://cyc.com

PODCAST INFO:
Podcast website: https://lexfridman.com/podcast
Apple Podcasts: https://apple.co/2lwqZIr
Spotify: https://spoti.fi/2nEwCF8
RSS: https://lexfridman.com/feed/podcast/
YouTube Full Episodes: https://youtube.com/lexfridman
YouTube Clips: https://youtube.com/lexclips

SUPPORT & CONNECT:
– Check out the sponsors above, it’s the best way to support this podcast
– Support on Patreon: https://www.patreon.com/lexfridman
– Twitter: https://twitter.com/lexfridman
– Instagram: https://www.instagram.com/lexfridman
– LinkedIn: https://www.linkedin.com/in/lexfridman
– Facebook: https://www.facebook.com/lexfridman
– Medium: https://medium.com/@lexfridman

OUTLINE:
Here’s the timestamps for the episode. On some podcast players you should be able to click the timestamp to jump to that time.
(00:00) – Introduction
(07:39) – What is Cyc?
(15:45) – How to form a knowledge base of the universe
(26:11) – How to train an AI knowledge base
(30:32) – Global consistency versus local consistency
(54:53) – Automated reasoning
(1:00:33) – Direct uses of AI and machine learning
(1:13:11) – The semantic web
(1:23:44) – Tools to help Cyc interpret data
(1:32:54) – The most beautiful idea about Cyc
(1:38:53) – Love and consciousness in AI
(1:45:52) – The greatness of Marvin Minsky
(1:50:46) – Is Cyc just a beautiful dream?
(1:55:31) – What is OpenCyc and how was it born?
(2:01:21) – The open source community and OpenCyc
(2:11:48) – The inference problem
(2:13:31) – Cyc’s programming language
(2:21:05) – Ontological engineering
(2:28:30) – Do machines think?
(2:37:15) – Death and consciousness
(2:47:16) – What would you say to AI?
(2:51:52) – Advice to young people
(2:53:48) – Mortality