This mistake seems to be getting more and more common. I use the example of sea turtles - the average lifespan across a clutch of eggs is maybe 1 year - becaus

This mistake seems to be getting more and more common. I use the example of sea turtles - the average lifespan across a clutch of eggs is maybe 1 year - because one out of 100 survives. But the one that survives usually lives for 100+ years. The fact that the life expectancy at hatching is only one year tells you nothing about the distribution.