have a certain working range.

Another great one is lifespan “Average lifespan was 45 in 1900 but now it’s 85!” or versions of that. Nothing like averages to mess up clear thinking. More babies died, lowering the average. But humans have always lived about 80 years, give or …take a few. Our bodies haven’t changed in 100,000 years all that much; as machines, they have a certain working range.”

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