be imprisoned or executed. Not without trial, of course, but it is only with great difficulty that a trial can be made to go against the wishes of a heavy-handed officialdom, particularly one under the command of the Emperor of the vast Galactic Empire.
He said finally, “It wouldn’t work.”
“Why not?”
“If I were asked to predict vague generalities that could not possibly come to pass until long after this generation and, perhaps, the next were dead, we might get away with it, but, on the other hand, the public would pay little attention. They would not care about a glowing eventuality a century or two in the future.
“To attain results,” Seldon went on, “I would have to predict matters of sharper consequence, more immediate eventualities. Only to these would the public respond. Sooner or later, though—and probably sooner—one of the eventualities would
not
come to pass and my usefulness would be ended at once. With that, your popularity might be gone, too, and, worst of all, there would be no further support for the development of psychohistory so that there would be no chance for any good to come of it if future improvements in mathematical insights help to make it move closer to the realm of practicality.”
Cleon threw himself into a chair and frowned at Seldon. “Is that all you mathematicians can do? Insist on impossibilities?”
Seldon said with desperate softness, “It is you, Sire, who insist on impossibilities.”
“Let me test you, man. Suppose I asked you to use your mathematics to tell me whether I would some day be assassinated? What would you say?”
“My mathematical system would not give an answer to so specific a question, even if psychohistory worked at its best. All the quantum mechanics in the world cannot make it possible to predict the behavior of one lone electron, only the average behavior of many.”
“You know your mathematics better than I do. Make an educated guess based on it. Will I someday be assassinated?”
Seldon said softly, “You lay a trap for me, Sire. Either tell me what answer you wish and I will give it to you or else give me free right to make what answer I wish without punishment.”
“Speak as you will.”
“Your word of honor?”
“Do you want it in writing?” Cleon was sarcastic.
“Your spoken word of honor will be sufficient,” said Seldon, his heart sinking, for he was not certain it would be.
“You have my word of honor.”
“Then I can tell you that in the past four centuries nearly half the Emperors have been assassinated, from which I conclude that the chances of your assassination are roughly one in two.”
“Any fool can give that answer,” said Cleon with contempt. “It takes no mathematician.”
“Yet I have told you several times that my mathematics is useless for practical problems.”
“Can’t you even suppose that I learn the lessons that have been given me by my unfortunate predecessors?”
Seldon took a deep breath and plunged in. “No, Sire. All history shows that we do not learn from the lessons of the past. For instance, you have allowed me here in a private audience. What if it were in my mind to assassinate you? —Which it isn’t, Sire,” he added hastily.
Cleon smiled without humor. “My man, you don’t take into account our thoroughness—or advances in technology. We have studied your history, your complete record. When you arrived, you were scanned. Your expression and voiceprints were analyzed. We knew your emotional state in detail; we practically knew your thoughts. Had there been the slightest doubt of your harmlessness, you would not have been allowed near me. In fact, you would not now be alive.”
A wave of nausea swept through Seldon, but he continued. “Outsiders have always found it difficult to get at Emperors, even with technology less advanced. However, almost every assassination has been a palace coup. It is those nearest the Emperor who are the greatest danger to him. Against