He had reached the most likely region of space. Ahead was the most likely star. Pbssthpok’s moment of success was hard upon him. The ones he had come to help (if they existed at all; if they hadn’t died out in all this time; if they circled this star and not one less likely) wouldn’t be expecting him. Their minds were nearly animal. They might or might not use fire, but they certainly wouldn’t have telescopes. Yet they were waiting for him… in a sense. If they were here at all, they had been waiting for two and a half million years.

He would not disappoint them.

He must not.

A protector without descendants is a being without purpose. Such an anomaly must find a purpose, and quickly, or die. Most die. In their minds or their glands a reflex twitches, and they cease to feel hunger. Sometimes such a one finds that he can adapt the entire Pak species as his progeny; but then he must find a way to serve that species. Phssthpok was one of the lucky few.

It would be terrible if he failed.

Nick Sohl was coming home.

The quiet of space was around him, now that his ears had learned to forget the hum of the ship’s drive. Two weeks’ worth of tightly coiled stubble covered his jaw and the shaved scalp on either side of his cottony Belter crest. If be concentrated he could smell himself. He had gone mining in Saturn’s rings, with a singleship around him and a shovel in his hand (for the magnets used to pull monopoles from asteroidal iron did look remarkably like shovels). He would have stayed longer; but he liked to think that Belt civilization could survive without him for just about three weeks.

A century ago monopoles had been mere theory, and conflicting theory at that. Magnetic theory said that a north magnetic pole could not exist apart from a south magnetic pole, and vice-versa. Quantum theory implied that they might exist independently.