For Harris, “Jeopardy!” carried a special nostalgia long before she stood at the contestant podium. Harris and other contestants began their day on set in a windowless green room, where phones were banned. “A lot of winning at ‘Jeopardy!’ has to do with the buzzer,” Harris said. Still, Harris acknowledged that her years of reading and research equipped her with exactly the kind of cultural and historical fragments “Jeopardy!” is all about. “Honestly, my favorite thing about the experience was just hanging out with the other contestants,” Harris said.