The neat printing shrank down into fine hairlines, faint black meanderings over the pearly background.
The First Speaker touched the keys of the small console built into the arm of his chair. "We'll bring it back to the start - to the lifetime of Hari Seldon - and we'll adjust it to a small forward movement. We'll shutter it so that we can only see a decade of development at a time. It gives one a wonderful feeling of the flow of history, with no distractions by the details. I wonder if you have ever done this."
"Never exactly this way, First Speaker."
"You should. It's a marvelous feeling. Observe the sparseness of the black tracery at the start. There was not much chance for alternatives in the first few decades. The branch points, however, increase exponentially with time. Were it not for the fact that, as soon as a particular branch is taken, there is an extinction of a vast array of others in its future, all would soon become unmanageable. Of course, in dealing with the future, we must be careful what extinctions we rely upon."
"I know, First Speaker." There was a touch of dryness in Gendibal's response that he could not quire remove.
The First Speaker did not respond to it. "Notice the winding lines of symbols in red. There is a pattern to them. To all appearances, they should exist randomly, as even Speaker earns his place by adding refinements to Seldon's original Plan. It would seem there is no way, after all, of predicting where a refinement can be added easily or where a particular Speaker will find his interests or his ability tending, and yet I have long suspected that the admixture of Seldon Black and Speaker Red follows a strict law that is strongly dependent on time and on very little else."
Gendibal watched as the years passed and as the black and red hairlines made an almost hypnotic interlacing pattern. The pattern meant nothing in itself, of course. What counted were the symbols of which it was composed.
Here and there a bright-blue rivulet made its appearance, bellying out; branching, and becoming prominent, then falling in upon itself and fading into the black or red.
The First Speaker said, "Deviation Blue," and the feeling of distaste, originating in each, filled the space between them. "We catch it over and over, and we'll be coming to the Century of Deviations eventually."
They did. One could tell precisely when the shattering phonemenon of the Mule momentarily filled the Galaxy, as the Prime Radiant suddenly grew thick with branching rivulets of blue - more starting than could be closed down - until the room itself seemed to turn blue as the lines thickened and marked the wall with brighter and brighter pollution. (It was the only word.)
It reached its peak and then faded, thinned, and came together for a long century before it trickled to its end at last. When it was gone, and when the Plan had returned to black and red, it was clear that Preem Palver's hand had been there.
Onward, onward
"That's the present," said the First Speaker comfortably.
Onward, onward
Then a narrowing into a veritable knot of close-knit black with little red in it.
"That's the establishment of the Second Empire," said the First Speaker.
He shut off the Prime Radiant and the room was bathed in ordinary light.
Gendibal said, "That was an emotional experience."
"Yes," smiled the First Speaker, "and you are careful not to identify the emotion, as far as you can manage to fail to identify it. It doesn't matter. Let me make the points I wish to make.
"You will notice, first, the all-but-complete absence of Deviation Blue after the time of Preem Palver - over the last twelve decades, in other words. You will notice that there are no reasonable probabilities of Deviations above the fifth-class over the next five centuries. You will notice, too, that we have begun extending the refinements of psychohistory beyond the establishment of the Second Empire. As you undoubtedly know, Hari Seldon - although a transcendent genius - is not, and could not, be all-knowing. We have improved on him. We know more about psychohistory than he could possibly have known.
"Seldon ended his calculations with the Second Empire and we have continued beyond it. Indeed, if I may say so without offense, the new Hyper-Plan that goes past the establishment of the Second Empire is very largely my doing and has earned me my present post.
"I tell you all this so that you can spare me unnecessary talk. With all this, how do you manage to conclude that the Seldon Plan is meaningless? It is without flaw. The mere fact that it survived the Century of Deviations - with all due respect to Palver's genius - is the best evidence we have that it is without flaw. Where is its weakness, young man, that you should brand the Plan as meaningless?"
Gendibal stood stiffly upright. "You are right, First Speaker. The Seldon Plan has no flaw."
"You withdraw your remark, then?"
"No, First Speaker. Its lack of flaw is its flaw. Its flawlessness is fatal!"
The First Speaker regarded Gendibal with equanimity. He had learned to control his expressions and it amused him to watch Gendibal's ineptness in this respect. At every exchange, the young man did his best to hide his feelings, but each time, he exposed them completely.
Shandess studied him dispassionately. He was a thin young man, not much above the middle height, with thin lips and bony, restless hands. He had dark, humorless eyes that tended to smolder.
He would be, the First Speaker knew, a hard person to talk out of his convictions.
"You speak in paradoxes, Speaker," he said.
"It sounds like a paradox, First Speaker, because there is so much about Seldon's Plan that we take for granted and accept in so unquestioning a manner."