It was the Friday night of midterms during my first year at Caltech, and I was alone in the library. That weekend (week five of term, if you’re keeping count) also happens to coincide with Halloween. But as a bright-eyed frosh trudging my way through Ma 1a lecture notes, I was just baffled that no one else was studying alongside me. Spoiler alert: not all Caltech students spend Friday night—or every night—studying or grinding sets, even during midterms. And especially on Halloween weekend.