Very thought provoking. My first thought de Grey's claim that the first people to live a 1000 years have already been born is that will certainly require changes to social security. It seems likely even modest advances are enough to start getting societal conundrums. It looks like an interesting book.
There's a lot of big questions that come out of this. I'm thinking about how available such technological gains would be to the general public. As our current economic system stands now (U.S.) this would probably only apply to the wealthy. Think Dick Cheney, who seemingly will outlive all of us.
People would work longer than they do now because they would live healthier longer, possibly mitigating our current SS problems. It would also be in the best interest of the government to subsidize proven rejuvenation technologies because caring for the old is much more expensive than caring for the young.
