There are a lot of hypotheses about déjà vu. Here’s mine: Our subconscious is a strategy machine. It’s constantly looking ahead. It’s always building plausible scenarios about what will happen next. To get us ready. So we can decide what to do. So we can act. Sometimes the sheer number of scenarios our subconscious generates means one of those scenarios is exactly right. Sometimes, people say exactly what our subconscious thought they’d say. Sometimes, things happen exactly a