My parents also encouraged me to be intellectually curious, and left all of our large number of books in open sight, and I suspect that some of the things I read when I was young probably would have distressed them. If not the books about child development and adolescent behavior and so on, then probably things like this book which I read when I was fourteen, which, had it had to clear any sort of ratings system, would probably have been rated X even if all the content of a sexual nature had been excised.