40 Year Old Vs 65 Year Old American Hitting 90

[Phil153]

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It amuses me how much we can talk about such things and even purport to do so logically and intelligently without referring to life tables.

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Well, they're not that significant. The great majority of 40 yos make it to 65, so the question becomes one of medical advancement and the avoidance of large scale threats to survival.

I have to go with medicine. 25 years will see many of the aging related diseases cured or at least well managed, particularly the big killers of cancer and heart disease.