Would if be computationally cheaper to just simulate our brains (our just one brain. Yours!) to give us the illusion the universe is whatever it is (quantized or not) rather than simulating the actual universe?
There is only one intelligent being in the entire universe. It's the entire universe, having a dream about being a human. And it's you.
What do you mean? Wouldn't you still need to simulate the world in pretty much the same way to be able to feed consistent inputs into the simulated brain?
You're just feeling like you're being fed consistent inputs :)
And if you ever feel otherwise, the simulation will be rolled back and fixed :-)
There might be huge opportunities for pruning and approximation