Bring on the nanobots, and we will live long and prosper

Ray Kurzweil pens an op-ed in U.K’s The Guardian:

Extending human life expectancy is not a new story. When our genes evolved thousands of years ago, it was not in the interests of the species for people to live past child-rearing as resources such as food were in very short supply.

So human life expectancy was in the 20s a thousand years ago. It was only 37 in 1800. It is now pushing 80, and we have been adding about three months each year for the past several decades.

This progression is about to go into high gear. Until recently, health and medicine was a hit or miss affair. We would discover interventions such as drugs that had benefits but also many side effects. We did not have the means to design interventions, but that is changing. The breakthrough in stem-cell biology reported this week offers just one example of the progress.

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