That study is based on a very biased sample, and is very much not about life expectancy at birth. It is based on records of noteworthy people: "both ancient an

That study is based on a very biased sample, and is very much not about life expectancy at birth. It is based on records of noteworthy people: "both ancient and modern samples were comparable with respect to males who survived into adulthood and who achieved notability (or notoriety)."