I’m thinking about Hume’s historical fallacy and Stephen Hawking’s comment that the law of entropy is our experience of time. Over time, everything gradually falls apart–people age, buildings fail, civilizations collapse, mountains erode. That’s how we know time is passing. But Hume correctly points out that our observation of what has happened before is not necessarily related to what will happen. It’s a rough time to be a wall (or a human), but this seems like it leaves room for hope.