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Stephen Wolfram

๐Ÿ‘ค Speaker
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4010 total appearances
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Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

It sort of stands to some kind of reason that the number of weights in the neural net, I don't know, I can't really argue that.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

I can't really give you a good, in a sense, the very fact that insofar as there are definite rules of what's going on, you might expect that eventually we'll have a much smaller neural net that will successfully capture what's happening.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

I don't think the best way to do it is probably a neural net.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

I think a neural net is what you do when you don't know any other way to structure the thing.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

And it's a very good thing to do if you don't know any other way to structure the thing.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

And for the last 2000 years, we haven't known any other way to structure it.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

So this is a pretty good way to start.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

But that doesn't mean you can't find sort of, in a sense, more symbolic rules for what's going on that, you know, much of which will then be, you can kind of get rid of much of the structure of the neural net and replace it by things which are sort of pure steps of computation, so to speak,

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

sort of with neural net stuff around the edges, and that becomes just a much simpler way to do it.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

Right.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

There will still be some stuff that's kind of fuzzy.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

It's like this question of what can we formalize?

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

What can we turn into computational language?

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

What is just sort of, oh, it happens that way just because brains are set up that way.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

Well, I mean, I think that deep computation is not what large language models do.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

I mean, it's a different kind of thing.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

The outer loop of a large language model, if you're trying to do many steps in a computation, the only way you get to do that right now is by spooling out the whole chain of thought as a bunch of words, basically.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

And you can make a Turing machine out of that if you want to.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

I just was doing that construction.

Lex Fridman Podcast
#376 โ€“ Stephen Wolfram: ChatGPT and the Nature of Truth, Reality & Computation

In principle, you can make an arbitrary computation by just spooling out the words, but it's a bizarre and inefficient way to do it.