"You've explained the theory back of all this"—McGinnis changed the subject—"but I still find it incredible. It's still just theory."

"Well," Cal said, "theory comes first. Even to add two and two, you first have to get the idea that it can be done, a theory of how it is done, but that still won't get you four. You've got to learn how to apply the theory.

"When I first found I knew how, I was pretty concerned. The whole basis of science is that anybody can do it, anybody who follows the step-by-step method. It doesn't take any special gifts that can't be trained. I had visions of a world, a universe of people, in possession of this theory and method before they were wise enough to use it, and chaos.

"But when I thought it over, I stopped worrying. The methods of science are also open to all. But few bother to learn them. Most prefer their frustrations and their miseries to making the effort which will solve them. For centuries the libraries containing all the accumulated knowledge and wisdom of mankind have been free and open to anybody who wants to read, but few have bothered to absorb that knowledge and that wisdom.

"This new key we have that unlocks the door to another vista of knowledge, another point of view whereby we can change material things to suit our desire, is merely another advance of science. For science, after all, is no more than organized knowledge of reality. You can't multiply six times six until you've learned how to add two and two. Most people won't bother.

"It will be a long, long time before any significant number will graduate through all the normal seven steps of E science to become ready for the eighth. Some of the E's will master it, but you know how few E's there are. And the E's have enough restraint, wisdom, and selflessness to use this new knowledge for the benefit of man instead of his detriment.

"I suspect that one has to be graduated beyond the desire to make me-and-mine ascendant over others before he can absorb this knowledge."

"Maybe that's my trouble," McGinnis said slowly. "I've been thinking, all along, of how much power this gives the E's. Wondering if even the E's should have that much power over others."

Linda spoke up.

"E McGinnis," she said, "Cal has solved the problem of what happened to the colonists, why they didn't communicate. Do you think this will qualify him for his big E?"