A crowd of young adults looked down at their phones in a hallway at the back of Aloft Hotels in Downtown Tallahassee on Feb. 16. The audience, no older than 21, awaited Daniel Rotter, Jonas Gindin, ...

Laughter, at its most primal, can be read as a feral animal instinct rather than a refined social response. We laugh when we see someone fall, not always out of cruelty, but out of a reflex, since at ...