“I said,” shouted Ford, “this looks like it might be some kind of evidence of dimensional drift.” “Which is what?” shouted Arthur back. “Well, a lot of people are beginning to worry that spacetime is showing signs of cracking up with everything that’s happening to it. There are quite a lot of worlds where you can see how the landmasses have cracked up and moved around just from the weirdly long or meandering routes that migrating animals take. This might be something like that. We live in twisted times. Still, in the absence of a decent spaceport…”