that was Charlotte’s secret trick. She said she didn’t stop to consider why some sorts of madness were better than others: ‘I just knew on an innate level who would make good television. We all did. Big Brother. The X-Factor. American Idol. Wife Swap . . . Wife Swap is particularly bad because you’re monkeying with people’s families, with their children. You’ve got some loop-the-loop stranger yelling at someone’s children. The producers spend three weeks with them, pick the bits that are mad enough, ignore the bits that aren’t mad enough, and then leave.’