Imagine that you are standing on a theater stage. If the house lights are on, you’ll probably be able to see all the way to the back of the hall. But if you’re under a bright spotlight, you won’t be able to make out even the front row. That’s exactly how it is with our lives. It’s because we cast a dim light on our entire lives that we are able to see the past and the future. Or at least we imagine we can. But if one is shining a bright spotlight on here and now, one cannot see the past or the future anymore.