Data issues! I never bother to pull out my calculator to see how much 639/42536 is, but good mental math/intuition lets me thoughtlessly go "oh, that's only 1.

Data issues! I never bother to pull out my calculator to see how much 639/42536 is, but good mental math/intuition lets me thoughtlessly go "oh, that's only 1.5%" rather than "600+ seems like a lot"