The Runaway Skyscraper
by Murray Leinster
"I don't know how to say this to make you understand it, but time is as much a dimension as length and width." He frowned. Wells wanted to talk about the Time Machine, but he knew it wouldn't do any good – these people didn't read things like that. "If the world were settled, we would be lower. If it had settled on one side, we would have been moved in some way, but since it settled back into the Fourth Dimension, we are going back in time. " "Then -" "We are in a runaway skyscraper chained to the discovery of America some time ago!"
