I said "at 90 you can't learn and adapt like you could in your 20s". You chose to cut off my quote so it sounds like I said something else, and argue with the

I said "at 90 you can't learn and adapt like you could in your 20s". You chose to cut off my quote so it sounds like I said something else, and argue with the strawman you created. This alone means it's pointless discussing anything with you, as there's no basic intellectual honesty here. If your claim is that most people at 90 are as intellectually flexible and capable as 20 year old people, that's a rather drastic deviation from basic facts of reality. Another reason it's pointless discussing anything with you. "We should fix this"... yeah ok, fix it. We're not discussing that, but just mechanically extending days of life. Those two things are not the same thing. While you're "fixing this" (mental performance at 90) you'll find entropy is rather unforgivable, especially for cells which can't divide so you'll have to essentially completely redo our biology in order to "fix this". Good luck.