I’m not sure that I’m as optimistic about nano-tech, but I’ve heard this 20-year number thrown around a lot as of late.
Scientist Ray Kurzweil claims humans could become immortal in as little as 20 years’ time through nanotechnology and an increased understanding of how the body works.
Maybe in 30-40 years it will be bug free and affordable! That actually gives me some reason to exercise and eat right now — I gotta be *alive* to get my nanoprobe injections. 😉