One dog became famous. Actually he and she was a group of dogs, but they became renowned collectively as Pavlov's Dog.

The thing about Pavlov's Dog is that he or she or they responded mechanically to mechanically administered stimuli. Pavlov's Dog caused some of the domesticated primates, especially the scientists, to think that all dog behavior was equally mechanical. This made them wonder about other mammals, including themselves.

Most primates ignored this philosophical challenge. They went about their business assuming that they were not mechanical.

The fact that plutonium was missing originally leaked to the press in the mid-1970s. At first there was a minor wave of panic among those given to worrying about such matters, and there was even some churlish grumbling about a government so incompetent that it couldn't keep track of its own weapons of megadeath.

But then a year passed, and another, and soon five years had passed, and then nearly a decade; and the missing plutonium was still missing but nothing really drastic had happened.

Terran primates, being a simpleminded, sleepful race, simply stopped worrying about the subject. The triggering mechanism of the most destructive weapon ever devised on that backward planet was in unknown hands, true; but that was really not much more unsettling to contemplate than the fact that many of the known hands which had enjoyed access to plutonium belonged to persons who were not in all respects reasonable men. (See Terran Archives: Reagan, Ronald Wilson, career of.)

The primate philosophy of that epoch was summed up by one of their popular heroes, Mr. Satchel Paige, in the aphorism, "Don't look back-something might be gaining on you." It was a comfortable philosophy for sleep-loving people.

The use of atomic weapons was widely blamed on a primate named Albert Einstein. Even Einstein himself had agreed with this opinion. He was a pacifist and had suffered abominable pangs of conscience over what had been done with his scientific discoveries.