Douglas Lenat: Cyc and the Quest to Solve Common Sense Reasoning in AI | Lex Fridman Podcast #221

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: and use code LEX to get 10% off - BiOptimizers: to get 10% off - : and use code LEX to get free postage & scale - LMNT: to get free sample pack - ExpressVPN: and use code LexPod to get 3 months free EPISODE LINKS: Douglas’s Twitter: Cyc’s Website: PODCAST INFO: Podcast website: Apple Podcasts: Spotify: RSS: Full episodes playlist: Clips playlist: OUTLINE: 0:00 - Introduction 1:11 - What is Cyc? 9:17 - How to form a knowledge base of the universe 19:43 - How to train an AI knowledge base 24:04 - Global consistency versus local consistency 48:25 - Automated reasoning 54:05 - Direct uses of AI and machine learning 1:06:43 - The semantic web 1:17:16 - Tools to help Cyc interpret data 1:26:26 - The most beautiful idea about Cyc 1:32:25 - Love and consciousness in AI 1:39:24 - The greatness of Marvin Minsky 1:44:18 - Is Cyc just a beautiful dream? 1:49:03 - What is OpenCyc and how was it born? 1:54:53 - The open source community and OpenCyc 2:05:20 - The inference problem 2:07:03 - Cyc’s programming language 2:14:37 - Ontological engineering 2:22:02 - Do machines think? 2:30:47 - Death and consciousness 2:40:48 - What would you say to AI? 2:45:24 - Advice to young people 2:47:20 - Mortality SOCIAL: - Twitter: - LinkedIn: - Facebook: - Instagram: - Medium: @lexfridman - Reddit: - Support on Patreon: