Quentin Tarantino has said that he will retire after he makes his next film. (Whatever that film turns out to be; the upcoming “The Adventures of Cliff Booth” was written by Tarantino but directed by David Fincher, so it doesn’t count.) Tarantino’s reason for this tends to change with every interview – Tarantino talks a lot – but his primary impetus seems to be: He thinks filmmakers get worse when they get old. “I know film history, and from her…