Aging, Evolution and the "developmental drift"

Besides, aging aka anti-cancer mechanisms, are often very much designed to work that way. Working on those mechanisms could increase longevity, however it will not cure aging.

We only have two copies of our DNA, and if you live long enough and cure every cancer, you could* still* end up with a left arm that genetically drifts from your right leg. And they both drift from your immune system.

Deinococcus radiodurans has 4 copies of its genome, but it's only a single cell. We'd need something like that but with a central place that decides what's you and what isn't you.

Think of it as RAID for your genome somewhere deep inside your chest. But we are nowhere near anything like that. So I wish the best of luck to Ray Kurtzweil and the rest of us, but I am not at all optimistic about the singularity.

http://news.ycombinator.com/item?id=256355