We live in an era of very rapid change driven by technological progress. Today's world is enormously different from that of three or four decades past: consider the pervasive effects of the revolution in communications and computing technologies that has taken place over that time. Yet, human nature being what it is, most of the people who lived through this profound shift in capabilities and culture are nonetheless very skeptical of claims that the future will look radically different from today in any important aspect. It is strange.
In particular the concept of actuarial escape velocity leading to thousand year life spans is a very hard sell. People look at the large number that is very different from today's maximum life span and immediately reject it out of hand, no matter the reasonable argument behind it. Any medical technology that produces some rejuvenation in old patients buys extra time to develop better means of rejuvenation. At some point the first pass at rejuvenation treatments will improve such that remaining healthy life expectancy grows at more than a year with each passing year. At that point life spans will become indefinite, limited only by accident or rare medical conditions not yet solved.
It doesn't help that most of the public has very little knowledge of the present state of medical research in any field, never mind the specific details of how aging might be treated and brought under medical control. The only solution to that issue is to keep on talking: educate, advocate, and spread the word.
It is likely the first person who will live to be 1,000 years old is already alive today. This is according to a growing regiment of researchers who believe a biological revolution enabling humans to experience everlasting youthfulness is just around the corner. At the epicentre of the research is Aubrey de Grey, co-founder or the California-based Strategies for Engineered Negligible Senescence (SENS) Research Foundation.
"The first thing I want to do is get rid of the use of this word immortality, because it's enormously damaging, it is not just wrong, it is damaging. It means zero risk of death from any cause - whereas I just work on one particular cause of death, namely ageing." de Grey said his research aims to undo the damage done by the wear and tear of life, as opposed to stopping the ageing process altogether. "If we ask the question: 'Has the person been born who will be able to escape the ill health of old age indefinitely?' Then I would say the chances of that are very high. Probably about 80 per cent."
"The therapies that we are working on at the moment are not going to be perfect. These therapies are going to be good enough to take middle age people, say people aged 60, and rejuvenate them thoroughly enough so they won't be biologically 60 again until they are chronologically 90. That means we have essentially bought 30 years of time to figure out how to re-rejuvenate them when they are chronologically 90 so they won't be biologically 60 for a third time until they are 120 or 150. I believe that 30 years is going to be very easily enough time to do that."