#89 – Stephen Wolfram: Cellular Automata, Computation, and Physics

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Apr 18, 2020

Stephen Wolfram, a renowned computer scientist and founder of Wolfram Research, dives deep into fascinating topics like cellular automata and their role in understanding the natural world. He explores how simple rules can lead to unexpected complexity, and discusses the philosophical implications of computation in the universe. The conversation also touches on the challenges of conveying complex scientific ideas and the evolution of programming languages. Finally, Wolfram reflects on consciousness, ethics in AI, and the quest for a unified theory of existence.

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ANECDOTE

Arrival Movie's Alien Language

Stephen Wolfram and his son created the alien language for the movie Arrival.
He discusses the challenge of communicating with alien intelligence, using AI as an example of an "alien" intelligence.

INSIGHT

Intelligence vs. Computation

Wolfram argues there's no clear distinction between intelligent and computational processes.
He questions how we differentiate between computations in weather systems versus our brains, suggesting the difference lies in historical context.

ANECDOTE

Monoliths and Technosignatures

Lex Fridman asks about the monoliths in 2001: A Space Odyssey as alien communication.
Wolfram discusses the concept of technosignatures and the challenge of creating something that signals intelligence.

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Stephen Wolfram is a computer scientist, mathematician, and theoretical physicist who is the founder and CEO of Wolfram Research, a company behind Mathematica, Wolfram Alpha, Wolfram Language, and the new Wolfram Physics project. He is the author of several books including A New Kind of Science, which on a personal note was one of the most influential books in my journey in computer science and artificial intelligence.

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EPISODE LINKS:
Stephen’s Twitter: https://twitter.com/stephen_wolfram
Stephen’s Website: https://www.stephenwolfram.com/
Wolfram Research Twitter: https://twitter.com/WolframResearch
Wolfram Research YouTube: https://www.youtube.com/user/WolframResearch
Wolfram Research Website: https://www.wolfram.com/
Wolfram Alpha: https://www.wolframalpha.com/
A New Kind of Science (book): https://amzn.to/34JruB2

This conversation is part of the Artificial Intelligence podcast. If you would like to get more information about this podcast go to https://lexfridman.com/ai or connect with @lexfridman on Twitter, LinkedIn, Facebook, Medium, or YouTube where you can watch the video versions of these conversations. If you enjoy the podcast, please rate it 5 stars on Apple Podcasts, follow on Spotify, or support it on Patreon.

Here’s the outline of the episode. On some podcast players you should be able to click the timestamp to jump to that time.

OUTLINE:
00:00 – Introduction
04:16 – Communicating with an alien intelligence
12:11 – Monolith in 2001: A Space Odyssey
29:06 – What is computation?
44:54 – Physics emerging from computation
1:14:10 – Simulation
1:19:23 – Fundamental theory of physics
1:28:01 – Richard Feynman
1:39:57 – Role of ego in science
1:47:21 – Cellular automata
2:15:08 – Wolfram language
2:55:14 – What is intelligence?
2:57:47 – Consciousness
3:02:36 – Mortality
3:05:47 – Meaning of life