Every day, as I walk to campus, I pass a familiar brown sandstone gate, its regularly spaced pillars briefly constricting the sidewalk. It rises just above eye level, revealing only the trees peeking ...

In grade school, we learned a comforting symmetry: AxB = BxA. But in real life, order isn’t so forgiving; the order in which we do things — act, decide or even think — changes the outcome. Sequence is ...