Brain uploads living in simulated universes are I think are our surest bet at immortality. @cstross has a highly entertaining book called Accelerando which deal

Brain uploads living in simulated universes are I think are our surest bet at immortality. @cstross has a highly entertaining book called Accelerando which deals with this. Check it out if you haven't yet already. If you push is a bit, you can also branch the human brain at a certain point in your life and merge back to master whenever you see fit, and you can experience more than you ever could in a single life. EDIT: I realize space is a big deal, but I only wish some organization working with the funds that NASA has that can explore the human brain and consciousness. This could initially lead to a variety of psychological hacks coming out which could be used by marketers and ultimately a deeper understanding of intelligence. Like OP said, if we could simulate a brain in a computer, there's no reason we couldn't make it better. If we could make it better, and this is pushing it even further, provide it with the right "memories" as a starting point, you could have the equivalent of the greatest minds of humanity living simultaneously. Think about what we could achieve then ?