Because your comment was regarding our having the technology needed to allow someone to live 1000+ years. In order to allow that, we'll need to have mastered manipulation of literally every cell in the body.
By the time we can go in and reinvigorate teeth, bones, all the internal organs, all the cells in the brain... restoring patches of skin will likely be trivial.
Solving the problem of aging generally means solving an avalanche of specific problems - one of which is the rejuvenation of skin.
> Because your comment was regarding our having the technology needed to allow someone to live 1000+ years. In order to allow that, we'll need to have mastered manipulation of literally every cell in the body.
This is not correct. The core concept is that we will develop individual solutions which solve pieces of the longevity problem. Living to 150 may only require solving one of them. Living to 1000+ may require what you propose (although that is not clear either) but in the intervening time period between the initial solution and the ultimate solution you cannot assume all other physical aspects of an aged individual will simply vanish.
you might live for 1000 years in the body of a 25 year old, but if you age and then get the treatments, even though you might have the body of a 25 year old, you might have some scarring or other effects left over
I feel that you're moving the goalposts on me by talking about the initial stages when some might make it to 150. My comments were regarding what you originally said above, not what you might have meant and tried to clarify in later comments.
I agree with you that at first we might solve some problems that extend life some years here and there but still be left with other semi-debilitating issues.
But once you're talking about all of the issues needed to be solved to reach 1,000 years, the technology will have to be far far far beyond the ability to repair some scarred skin.
I was responding to a commenter who suggested that you'd spend 850 years in the body of a 150-year-old. I was objecting to that idea, but conceding that there might be some unpleasantness left over. I only clarified the timeline of that unpleasantness when you objected.
To be clear, I wasn't only talking about scarred skin, but any consequence of aging. I was using excess skin due to rapid weight loss as an example of this type of comorbidity, in which one problem must be dealt with separately from another problem. It may be true that extending lifespans to 1000+ years will require technologies which will also resolve all other age-related issues. It may even be likely. But there is no principle that says it must be so.
By the time we can go in and reinvigorate teeth, bones, all the internal organs, all the cells in the brain... restoring patches of skin will likely be trivial.
Solving the problem of aging generally means solving an avalanche of specific problems - one of which is the rejuvenation of skin.