The complete extinction 65 million years ago of the dinosaurs--the subjects of unlimited imaginings of us latter-day creatures--was a seemingly calamitous and tragic event which left no survivors. But in fact the average rate at which the dinosaurs died out was equivalent to one species every thousand years. Even if humans had been alive at the time, we could not easily have observed the course of their demise.
給後人無窮想像的恐龍，六千五百萬年前的滅絕看似慘烈，沒有任何一種倖存，但恐龍消失的平均速度相當於一千年一種，人類即使存在當代，也難親睹滅絕歷程。