We only perceive one slice of time from moment to moment. There’s now … and now … and now. We treat before and after as aspects of the real world, whereas they are only bits of organisational language. Because of this mistake, we can play mental games that exploit the error. Are you exactly the same person you were when you were a baby? Will you be the same person when you are very old? What about tomorrow? Does it make sense to say that the person who will get out of your side of the bed tomorrow morning is the same identical person reading this page now?
