Maybe 90 minutes of quiz shows is not your idea of a good time. Maybe it’s not anybody’s idea of a good time. As you settle down in front of BBC Two on a Monday night for the launch of its quiz night — Mastermind followed by Only Connect followed by University Challenge — you can’t help wondering what kind of weirdo would volunteer to watch this much quizzing, and feeling rather sorry for those sad saps. By the time the 90 minutes is over, you’re worried that you are just such a weirdo yourself.