What makes something funny? Can you make yourself funnier?

University of Colorado professor Peter McGraw is trying to answer those questions and solve other mysteries in humor. The latest “Collectors” film from FiveThirtyEight and ESPN Films, “Good Humor,” directed by Jamie Schutz, follows McGraw as he tries to help David, an unfunny brewery owner, become funnier. But this isn’t all a big joke — as McGraw said: “To understand what makes things funny is actually to understand people.”