[kdtop3]

A big part of life expectancy statistics includes infant mortality. If all adults live to age 100 yrs, but half of all babies born die, then the average life expectancy would be age 50 yrs. So sometimes it can be confusing to understand what is being said.

[estaseuropano]

Correct. But infants are usually not scholars so irrelevant to this analysis.

[Chris2048]

Which uncommon infants are scholars?