I would like to throw out something for discussion that I see may become an issue within the lifetime of many here. A couple of months ago I was on a philosophy discussion group and we got into the nature of the brain. This led to a discussion of computers.
Some people believe that the mind is a quantum computer.
I remembered reading an interesting article on quantum computers which had said that quantum computers could possibly prove the many-worlds hypothesis in physics. At the time,I could not find the article. I finally found it. It was from Discover. For those who don't know what the Many Worlds Hypothesis is, it was a solution to the problem of the collapse of the quantum wave function proposed by Hugh Everett in 1957.