Rafi Letzter wrote an article called “If you think your brain is more than a computer, you must accept this fringe idea in physics“.
The article states the view of computer scientist Scott Aaronson: “…because the brain exists inside the universe, and because computers can simulate the entire universe given enough power, your entire brain can be simulated in a computer.”
Who the fuck said computers can simulate the entire universe?
That is a huge assumption. It’s also wrong.
We need to always look close at the assumptions that people use to build theories. If it can be proven that computers can simulate the entire universe, then this theory will be slightly easier to swallow.
The human brain is capable of computation, and that’s why humans are able to invent computers.
The very question as to whether the brain “is a computer” is wrong-headed. Does the brain use computation? Of course it does (among other things). Is the brain a computer? Of course it isn’t.