Perhaps this happens to you. It’s a creepy feeling, regardless. You’ve heard a lot about a movie and you decide to see it. Since you’re not rich you decide to wait until it comes to a streaming service to which you already subscribe. So far I’m sure you’re with me. One evening, when the timing seems right, you sit down to see it. You don’t know how it will end, but some scenes look familiar to you. You nevertheless enjoy it—the jokes are fresh to you and you laugh. You figure that you must’ve seen the familiar parts in the ...