At a party 10 or 12 years ago I met a man (well, a male of the genus academic to be more exact) who boasted to me that he had recently taken his 12-year-old son to see his very first movie. The boy, I was assured, had remained innocent of all cinematic knowledge until he, the father, felt the time was right. (Need I specify that my interlocutor had already—indeed almost immediately—let me know that he did not permit a television in the family home? I think I do not.)