I think of it this way: time is like space. Things far back in time are like things orbiting distant stars. Go too far and telescopes can no longer see. This i

I think of it this way: time is like space. Things far back in time are like things orbiting distant stars. Go too far and telescopes can no longer see. This is made more real by the fact that the Earth is a boiling cauldron of plate tectonics, weather, and biological processes. It doesn’t take long for all traces of something to be obliterated. Maybe we think the first great civilizations were in the desert just because things decay slower in the desert.