Good grief, Sal thought. This is awful. They can do all kinds of things we can’t; they’re centuries ahead of us. Who around here that I know can annihilate time? No one. He groaned aloud.
These parallel worlds are a knotty problem, he realized. I wonder how many exist. Dozens? With a different human sub-species dominant on each? Weird idea. He shivered. God, how unpleasant . . . like concentric rings of hell, each with its own particular brand of torment.