There are disturbing ideas in the Feb 21, 2011 Time magazine cover article 2045: The Year Man Becomes Immortal. The article attributes to Raymond Kurzweil the prediction that within the next 25 years personal computers will possess the processing power and storage capacity to allow humans to "scan our consciousnesses into computers."
Does Judaism claim the brain as the seat of the soul? If so, and I'm able to download my brain into a computer, does that mean "I" (i.e. my soul) can outlive my body? Could this state of existence fulfill any of the ideas contained in the Messianic Age or The World To Come (a purely spiritual existence)? Can one then mix souls together by mixing together the bits of their brains? What is the Jewish definition of consciousness?