That might be the best analogy, but it's unsatisfying to me. The earth doesn't have an edge because it is round. When you go far enough in one direction you e

That might be the best analogy, but it's unsatisfying to me. The earth doesn't have an edge because it is round. When you go far enough in one direction you end up where you were. If that was how they thought time worked, I could deal with that. But it's not. If they thought it was infinite in extent in both directions. I could deal with that. But the idea of a dimension just ending... That's a mind boggler.