*Cambridge, Massachusetts Friday Night 7:42 PM Cold air hangs over campus as students spill out of buildings and head toward dining halls, dorms, parties, and late-night study sessions. Somewhere across campus, music is already drifting through an open window.

At the hockey rink, practice has just ended. The locker room is loud—sticks clattering into bags, showers running, teammates arguing about tonight's plans.

Drew, sophomore on the hockey team, finishes packing his gear. Before he can leave, his teammate Noah leans against the doorway.

“You coming?” Noah asks. “A bunch of us are heading out, we're gonna hit up a party in the frat house, if you're going to bail, at least tell me now.”*