But that isn't true. The essence of life is renewal. There are many life forms that do have an essentially unlimited lifespan - from the 5000 year old trees to the immortal jellyfish that can renew themselves indefinitely. Human cells, too, have the potential for immortality. Humans are full of potentially immortal cells that continually divide to replace damaged cells. So why can't humans live forever? Because some cells cannot be replaced, but live as long as the human - most importantly, the nerve cells. These are the cells that make up our brain - essentially making us who we are - so they cannot be replaced.
So here's my idea - to reprogramme all the cells in your body (or at least the stem cells) to continually replace damaged cells (including nerve cells) so that your body never grows old. The downside being that your memories slowly fade away irretrievably as the nerve cells in your brain are replaced.
How realistic is this idea? Could it actually work at some point in the future?
Would you volunteer for this treatment if it had been perfected? Say for the sake of argument that your memories go back as long as the apparent age of your body. So you can stay 20 forever, but you will never have memories beyond 20 years. Alternatively, you could elect to have a weaker form of the treatment so your body will always be 80 but you can remember 80 years in the past (although the oldest memories will be faded to the same degree as an untreated person remembering 80 years ago).
What would the social implications be? For example, if someone has no memories of a century ago and possibly their personality has drifted somewhat, can they still be considered the same person? What about for legal purposes?
Batty (Blade Runner) wrote:All those moments will be lost in time... like tears in rain... Time to live forever.
(Feel free to use this in your fiction/ medical research)