You Can Live Long Enough to live Forever sounds like a crazy claim but it may come true.
“Do we have the knowledge and the tools today to live forever? If all science and technology development suddenly stopped, the answer would have to be no. We do have the means to dramatically slow disease and the aging process far more than most people realize, but we do not yet have all the techniques we need to indefinitely extend human life. However, it is clear that far from halting, the pace of scientific and technological discovery is accelerating.
According to models that Ray has created, our paradigm-shift rate—the rate of technical progress—is doubling every decade, and the capability (price performance, capacity, and speed) of specific information technologies is doubling every year.4 So the answer to our question is actually a definitive yes—the knowledge exists, if aggressively applied, for you to slow aging and disease processes to such a degree that you can be in good health and good spirits when the more radical life-extending and life-enhancing technologies become available over the next couple of decades.
Longevity expert and gerontologist Aubrey de Grey uses the metaphor of maintaining a house to explain this key concept. How long does a house last? The answer obviously depends on how well you take care of it. If you do nothing, the roof will spring a leak before long, water and the elements will invade, and eventually the house will disintegrate. But if you proactively take care of the structure, repair all damage, confront all dangers, and rebuild or renovate parts from time to time using new materials and technologies, the life of the house can essentially be extended without limit.” from Chapt 1 of Fantastic Voyage:Live Long Enough to live Forever by Ray Kurzweil & Terry Grossman M.D.