[cactusface]

If you can simulate matter, certainly you can simulate a brain. Qualia appear not to derive from pixie dust but accumulated experience in the world. You might need to train a brain for a long time to develop qualia. You might not be able to copy qualia from one brain to another. I think these are the main objections, but I'm not sure.

Personally, I'm not convinced that simulating matter is feasible, never mind a living organism, never mind an intelligent living organism, which is what the brain is, when you account for all of it.

We know how far away Andromeda is. We know how to build a spaceship. Therefore, it is possible to go to Andromeda. Is it though? What if the Earth doesn't have enough resources? How big is your brain simulator allowed to be?