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Stephen Wolfram

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4069 total appearances
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Podcast Appearances

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

And that's something that I think I am somewhat hopeful that that will be possible.

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

Although, you know, as of literally today, if you ask me, I'm confronted with things that I don't understand very well.

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

Yeah.

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

My guess is that within, so we didn't talk much about computational irreducibility, but it's a consequence of this principle of computational equivalence.

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

And it's sort of a core idea that one has to understand, I think, which is, the question is, you're doing a computation, you can figure out what happens in the computation just by running every step in the computation and seeing what happens.

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

Or you can say, let me jump ahead and figure out, you know, have something smarter that figures out what's going to happen before it actually happens.

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

And a lot of traditional science has been about that act of computational reducibility.

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

It's like we've got these equations and we can just solve them and we can figure out what's going to happen.

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

We don't have to trace all of those steps.

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

We just jump ahead because we solve these equations.

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

Okay, so one of the things that is a consequence of the principle of computational equivalence is you don't always get to do that.

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

Many, many systems will be computationally irreducible in the sense that the only way to find out what they do is just follow each step and see what happens.

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

Why is that?

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

Well, if you're saying, well, we, with our brains, we're a lot smarter.

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

We don't have to mess around like the little cellular automaton going through and updating all those cells.

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

We can just use the power of our brains to jump ahead.

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

But if the principle of computational equivalence is right, that's not gonna be correct, because it means that there's us doing our computation in our brains, there's a little cellular automaton doing its computation, and the principle of computational equivalence says these two computations are fundamentally equivalent.

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

So that means we don't get to say we're a lot smarter than the cellular automaton and jump ahead, because we're just doing computation that's of the same sophistication as the cellular automaton itself.

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

I understand, but the problem is, to know whether you're right, you have to have some computational reducibility, because we are embedded in the universe.

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

If the only way to know whether we get the universe is just to run the universe,