williamwright wrote

I had a thought this morning,

Dangerous business.

as a lay there too idle to get up. So just now googled to get my facts
straight.

But failed miserably at that.

We represent the 300,000th generation of humans (OK, I do. My kids are
300,001st; their kids are the 300,002nd.)

Thats mad, there is no date for the 1st generation.

But until only about seven generations ago almost everyone died before
they were fifty, and many died in their thirties.

Thats nothing like reality.

Go back further and few survived beyond their twenties.

And that in spades.

So aren't we incredibly lucky? We had a one in 43,000 chance of being
humans who can expect a long lifespan.

And you mangled that too.