Sketchbook Week 3

Played a game called Werewolf today. It was a mafia type game, where you have to kill off the mafia. During one part of the game, we were in a bind talking about who was the werewolf. We accused someone, but they weren't werewolf, but instead someone we needed to keep alive. I wondered what makes people believe and trust someone? There was obviously not enough evidence to point that this guy was a werewolf, but at the same time on what terms did everyone believe the werewolf(who accused the non werewolf).