It's been pointed out to us that the analogy we use to try and grasp Joan jett's objections to Pink - that it's like Mormonism, because you have to be born into it, doesn't actually stack up. Which we suppose is actually true, but we were stretching the point that you get your ancestors reverse-baptised. But, no, it doesn't really work. So, instead, we'll suggest that Joan Jett is trying for a version of the 1970's closed shop - where it is not enough to be competent, but you have to have served years as an apprentice and be a member of the right Union. Apologies to the Latter-Day Saints for our earlier sloppiness.