"What's the matter, Phil?"

"You darn near brought us into a head on collision with about twenty tons of the

Santa Fe's best rolling stock!"

"Don't be nervous; I've been driving since I was sixteen and I've never had an accident."

"I'm not surprised; you'll never have but one. Anyhow," Phil went on, "can't you keep your eyes on the road? That's not too much to ask, is it?"

"I don't need to watch the road. Look." She turned her head far around and showed him that her eyes were jammed shut. The needle of the speedometer hovered around ninety.

"Joan! Please!"

She opened her eyes and faced front once more. "But I don't have to look in order to see. You taught me that yourself, Smarty. Don't you remember?"

"Yes, yes, but I never thought you'd apply it to driving a car!"

"Why not? I'm the safest driver you ever saw; I can see everything that's on the road, even around a blind curve. If I need to, I read the other drivers' minds to see what they are going to do next."

"She's right, Phil. The few times I've paid attention to her driving she's been doing just exactly what I would have done in the same circ.u.mstances. That's why

I haven't been nervous."

"All right. All right," Phil answered, "but would you two supermen keep in mind that there is a slightly nervous ordinary mortal in the back seat who can't see around corners?"

"I'll be good," said Joan soberly. "I didn't mean to scare you, Phil."

"I'm interested," resumed Ben, "in what you said about not looking toward anything you wanted to see. I can't do it too satisfactorily. I remember once you said it made you dizzy to look away and still use direct perception."

"It used to, Ben, but I got over it, and so will you. It's just a matter of breaking old habits. To me, every direction is in 'front'—all around and up and down. I can focus my attention in any direction, or two or three directions at once. I can even pick a point of away from where I am physically, and look at the other side of things—but that is harder."

"You two make me feel like the mother of the Ugly Duckling," said Phil bitterly.

"Will you still think of me kindly when you have pa.s.sed beyond human communication?"

"Poor Phil!" exclaimed Joan, with sincere sympathy in her voice. "You taught us, but no one has bothered to teach you. Tell you what, Ben, let's stop tonight at an auto camp—pick a nice quiet one on the outskirts of Sacramento—and spend a couple of days doing for Phil what he has done for us."

"Okay by me. It's a good idea."

"That's mighty white of you, pardner," Phil conceded, but it was obvious that he was pleased and mollified. "After you get through with me will I be able to drive a car on two wheels, too?"

"Why not learn to levitate?" Ben suggested. "It's simpler—less expensive and nothing to get out of order."

"Maybe we will some day," returned Phil, quite seriously, "there's no telling where this line of investigation may lead."

"Yeah, you're right," Ben answered him with equal sobriety. "I'm getting so that

I can believe seven impossible things before breakfast. What were you saying just before we pa.s.sed that oil tanker?"

"I was just trying to lay before you an idea I've been mulling over in my mind the past several weeks. It's a big idea, so big that I can hardly believe it myself." —Well, spill it."

Phil commenced checking points off on his fingers. "We've proved, or tended to prove, that the normal human mind has powers previously unsuspected, haven't we?"

"Tentatively—yes. It looks that way."

"Powers way beyond any that the race as a whole makes regular use of."

"Yes, surely. Go on."

"And we have reason to believe that these powers exist, have their being, by virtue of certain areas of the brain to which functions were not previously a.s.signed by physiologists? That is to say, they have organic basis, just as the eye and the sight centers in the brain are the organic basis for normal sight?"

"Yes, of course."

"You can trace the evolution of any organ from a simple beginning to a complex, highly developed form. The organ develops through use. In an evolutionary sense function begets organ."

"Yes. That's elementary."

"Don't you see what that implies?"

Cob.u.m looked puzzled, then a look of comprehension spread over his face. Phil continued, with delight in his voice, "You see it, too?" The conclusion is inescapable: there must have been a time when the entire race used these strange powers as easily as they heard, or saw, or smelled. And there must have been a long, long period—hundreds of thousands, probably millions of years—during which these powers were developed as a race. Individuals couldn't do it, any more than

I could grow wings. It had to be done racially, over a long period of time.

Mutation theory is no use either—mutation goes by little jumps, with use confirming the change. No indeed—these strange powers are vestigial—hangovers from a time when the whole race had 'em and used 'em."

Phil stopped talking, and Ben did not answer him, but sat in a brown study while some ten miles spun past. Joan started to speak once, then thought better of it.

Finally Ben commenced to speak slowly.

"I can't see any fault in your reasoning. It's not reasonable to a.s.sume that whole areas of the brain with complex functions 'jest growed.' But, brother, you've sure raised h.e.l.l with modern anthropology."

"That worried me when I first got the notion, and that's why I kept my mouth shut. Do you know anything about anthropology?"

"Nothing except the casual glance that any medical student gets."

"Neither did I, but I had quite a lot of respect for it. Professor

Whoosistwiteh.e.l.l would reconstruct one of our great grand-daddies from his collar bone and his store teeth and deliver a long dissertation on his most intimate habits, and I would swallow it, hook, line, and sinker, and be much impressed. But I began to read up on the subject. Do you know what I found?"

"Go ahead."

"In the first place there isn't a distinguished anthropologist in the world but what you'll find one equally distinguished who will call him a diamond-studded liar. They can't agree on the simplest elements of their alleged science. In the second place, there isn't a corporal's guard of really decent exhibits to back up their a.s.sertions about the ancestry of mankind. I never saw so much stew from one oyster, They write book after book and what have they got to go on?—The

Dawson Man, the Pelkin Man, the Heidelberg Man and a couple of others. And those aren't complete skeletons, a damaged skull, a couple of teeth, maybe another bone or two."

"Oh now, Phil, there were lots of specimens found of Cro-Magnon men."

"Yes, but they were true men. I'm talking about submen, our evolutionary predecessors. You see, I was trying to prove myself wrong. If man's ascent had been a long steady climb, submen into savages, savages to barbarians, barbarians perfecting their cultures into civilization ... all this with only minor setbacks of a few centuries, or a few thousand years at the most . . . and with our present culture the highest the race had ever reached ... If all that was true, then my idea was wrong.