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Your mind can be non-invasively scanned and simulated in a jolly powerful
computer. Once there, this software copy of yourself appears to be, in all
ways, a perfect fascimile of yourself. It is intelligent, emotional and
writes good email. Because it is a software creature, it lives in virtual
environments (and writes a lot of email), and it's probably a much quicker
thinker than your biological self will ever be. It's also likely to be
immortal, as all it needs for continued survival is a server to host it, and
these are cheap and commonplace. It can, of course, copy itself - so one of
you could be installed on a rocketship to make the sub-light journey of years
to distant stars. Note: your physical self is not harmed at all by this process.
Your great-great-grandchildren can exchange witty email with you.
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Clone
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Your body can be cloned from a small sample. Your new body can be fast-grown
to any age you desire in a vat. You can then transfer your mind into this
shiny new body. For the purposes of this question, your old body is disposed of
in a suitably reverent manner. If you like, this question could be taken to
be roughly equivalent to a very extreme age-reversal treatment: one that left
essentially nothing of your previous physical self aside from your mind. You
should probably consider that your actual grey matter is transplanted. Of course,
this new body could be improved in various ways from your old one.
You can be sweet sixteen again...
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Pill
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There is a wonderful new pill that prevents you from getting any older. Keep
taking it, and you never age a day. Stop, and you start aging again. You can
stop and start so often as you like. Assume that
this comes bundled with medical advances that allow even an older person to
enjoy full health.
You can linger in your prime for centuries...
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