The software programs that make our body run ... were evolved in very different times. We'd like to actually change those programs. One little software program, called the fat insulin receptor gene, basically says, 'Hold onto every calorie, because the next hunting season may not work out so well.' That was in the interests of the species tens of thousands of years ago. We'd like to turn that program off.
Ray KurzweilSo what used to fit in a building now fits in your pocket, what fits in your pocket now will fit inside a blood cell in 25 years.
Ray Kurzweil