You know what? Old age is not all it's cracked up to be. I'm only 56, but that's just 14 years away from how old my hero Dennis Ritchie was when he died. I'm thinking about buying a new car. Before the decision wasn't so serious, because I knew it was unlikely to be the last car I ever owned. But since my current car is 14 years old, it's entirely possible that my next purchase will in fact be my last.
Someone's got to be the heavy here, and since no one else has stepped up to plate, it falls to gtomkins to rain on this parade with that hoariest intellectual bring-down, "Correlation does not establish Causation". Of course higher muscle strength correlates with lower mortality.
Neurons of the retina Ray Kurzweil and other so-called transhumanists have promised that in coming decades we will be able to transfer a digital copy of the trillions of connections among nerve cells in our brains into a computer. We would essentially reincarnate ourselves as non-biological beings that persist for eternity inside a laptop, on the endless links of the Internet or as avatars inside a television set.