"Einstein didn't say it was a fourth dimension," said Case. "Not a dimension as you think of length or breadth or depth. He thought of it as duration…"
"That's a fourth dimension," said Pringle.
"No, it's not," said Case.
"Gentlemen," said Sutton. "Gentlemen."
"Well, anyhow," said Case, "this Michaelson of yours figured out it was a mental concept, that time was in the mind only, that it has no physical properties outside of Man's ability to comprehend and encompass it. He found that a man with a strong enough time sense…"
"There are men, you know," said Pringle, "who have what amounts to an exaggerated time sense. They can tell you ten minutes have passed since a certain event has transpired and ten minutes have gone past. They can count the seconds off as well and as accurately as any watch."
"So Michaelson built a time brain," said Case. "A brain with its time sense exaggerated many billionfold, and he found that such a time brain could control time within a certain area…that it could master time and move through time and carry along with it any objects which might be within the field of power."
"And that is what we use today," said Pringle. "A time brain. You just set the lever that tells the brain where you want to go…or rather, when you want to go…and the time brain does the rest."
He beamed at Sutton. "Simple, isn't it?"
"I have no doubt," said Sutton, "that it is very simple."