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And wear himself out he did, dying barely into his fifty-first year.

Not that far off from the life expectancy of the age, 60.

Is that a life expectancy including infant mortality, though? The life expectancy of someone who survived to 20 would be much higher.

You just reminded me of something I've learned about in school:

https://en.wikipedia.org/wiki/Survivorship_curve

Adults could expect to live longer than that though, because infant mortality skews it lower. If you made it to your 20s back then, you could expect to live into your 70s

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