Well that's why think was retarded. The town needs to lynch the first night because the odds of getting the mafia are 0 if you don't lynch. Think's stupid play also cost the town a player later when they'd have had better odds (think, who might have been a special role I don't remember.)

The truth is that the town doesn't gain information without lynching, and the odds of losing a special role is less likely than killing a mafia.