[TowerTalk] My Yearly Mistake

[Roger D Johnson]

I ran afoul of this way back in grammar school when we were taught that the
average lifespan of the colonists was about 40 years. I went through most of
my life thinking that these folks reached middle age and started keeling over!
The truth was that childhood diseases claimed many of the infants and young
children and dragged the average down. If you survived childhood, the chances
of living to your sixties or seventies were pretty good.

73, Roger