David Deutsch presents at the beginning of the fabric of reality, this idea that you don't

need to know absolutely every single fact that needs to be known in order to understand,

fundamentally, everything that can be understood.

He was presenting this vision there of certain fundamental theories in science and outside

of science, and his four theories that he had were quantum theory, the theory of computation,

a theory of epistemology and evolution by natural selection, that these together formed

at worldview, the lens through which you could understand anything that could be understood.

I saw a beautiful video with him on YouTube where he was making the same points where he

was saying, you don't have to memorize and know every fact, you don't have to know where

every particle moved, but if you understand the deep underlying theories behind everything,

then you know at a high level how everything works.

And this can all be understood by a single person, a single brain, a single human being,

it's accessible to anybody.

And that is a jaw-droppingly powerful idea.

We can have explanations that can reach the entire universe and it's worth going through

the four that you'd mentioned.

Quantum theory is one of them.

Theory of computation is another one of them.

The theory of evolution is another one of them.

And then the theory of knowledge or epistemology is the fourth.

That's the way he presented it in fabric of reality.

Is it interesting that relativity is not in there?

...