People will still die, even in a world without ageing, which this treatment doesn't promise.
Without that people have lived longer are more likely to have lower risks of death per year. And thus older people in such a society would on average live longer.
If someone has an increased risk of death per year from cancer or whatever because something is failing over time they are still aging.
If the rate per year stays the same IE being 20 or 20,000 has no impact on your risks of cancer each year then someone that’s 20,000 likely takes very few other risks and is more likely to live another 20,000 years than the random 20 year old.
> it isn't the "primary cause
Only if you’re using an inaccurate definition of aging. If everyone over 20 should have the same risk of cancer as 20 years olds the total number of cancers would drop by more than half.
Then, one day, the are told their important and distant "parents" are finally arriving to bring them away to their new life...
Anyway, the point is that any aging wealthy pedicidal murderers are also gonna insist the body is perfect before they move in, meaning some other brain is going to be doing the work.
And you also reminded me of the flawed but moving film "Never Let Me Go" from 2010 about a more present version of this. Oh, and there's also Michael Bay's "The Island".
(In practice, almost everything over 5 years away, even when already in early human trials, has this property; the only reason the Covid vaccines happened faster is that everyone was willing to throw unlimited resources at the problem and do simultaneous tests on all candidates, and in a pipeline, rather than cost-efficiently and slowly like everything else has been).
In-vitro tissue culture is already a thing (including brain organoids, if you want a brain to control a robot: https://en.wikipedia.org/wiki/Cerebral_organoid), as is 3D bio-printing.
IIRC, there's no current way to scan even a single living synapse/synaptic cleft/dendrite combination to read out the corresponding connection strengths, let alone for the whole brain, so we can't yet scan a brain — but if we could do that, writing it back to a fresh blank one currently seems(!) like the easy part, as neurons change shape and grow in response to electrical gradients.
This, er, Brain of Theseus would retain operational patterns even if the individual cells have been replaced.
A variation on that would be too do it stochastically, constantly substituting a miniscule percentage of cells evenly across the entire brain.
This thread is about stem cells in monkeys.
https://blanu.net/curious_yellow.html
https://en.wikipedia.org/wiki/Glasshouse_(novel)
h/t HN user cstross
Many of the worst people in humanity, seem(ed) to act like they thought they were immortal.
Even being grazed by a bullet didn't stop Trump praising the second amendment.
(Though I say that as a non-American, and someone for whom the 2nd was part of why I never even considered attempting to migrate to the US; I do recognise the language used to support it as a quasi-religious badge of identity, i.e. hard to shake).
This at least gives the semblance of Trump having and sticking to a set of principles (though I suspect it's more to do with what his supporters would accept)