Where does Halloween come from? The answer involves community bonfires, ritualized hospitality, and visits from the Otherworld.
Why are apples seen as the “default” fruit in Western culture? The answer involves Greek myths, Latin spelling mistakes, and English semantic narrowing.
Why do we blow out candles on birthday cakes? The answer involves Egyptian theocracy, the moon goddess, and (as for many holidays) the mixing of Christian and pagan tradition.