went to a doctor."

Morgan's eyebrows lifted. "Good," he said.

Parks shrugged tiredly. "Not really. He examined me. He practically took me apart. I carefully refrained from saying anything about who I was or where I came from; just said I wanted a complete physical examination, and let him go to it. He was thorough, and when he finished he patted me on the back and said, 'Parks, you've got nothing to worry about. You're as fine, strapping a specimen of a healthy human being as I've ever seen.' And that was that." Parks laughed bitterly. "I guess I was supposed to be happy with the verdict, and instead I was ready to knock him down. It was idiotic, it defied reason, it was infuriating."

Morgan nodded sourly. "Because you're not a human being," he said.

"That's right. I'm not a human being at all."

"How did you happen to pick this planet, or this sun?" Morgan asked curiously. "There must have been a million others to choose from."

Parks unbuttoned his collar and rubbed his stubbled chin unhappily. "I didn't make the choice. Neither did anyone else. Travel by warp is a little different from travel by the rocket you fiction writers make so much of. With a rocket vehicle you pick your destination, make your calculations, and off you go. The warp is blind flying, strictly blind. We send an unmanned scanner ahead. It probes around more or less hit-or-miss until it locates something, somewhere, that looks habitable. When it spots a likely looking place, we keep a tight beam on it and send through a manned scout." He grinned sourly. "Like me. If it looks good to the scout, he signals back, and they leave the warp anchored for a sort of permanent gateway until we can get a transport beam built. But we can't control the directional and dimensional scope of the warp. There are an infinity of ways it can go, until we have a guide beam transmitting from the other side. Then we can just scan a segment of space with the warp, and the scanner picks up the beam."

He shook his head wearily. "We're new at it, Morgan. We've only tried a few dozen runs. We're not too far ahead of you in technology. We've been using rocket vehicles just like yours for over a century. That's fine for a solar system, but it's not much good for the stars. When the warp principle was discovered, it looked like the answer. But something went wrong, the scanner picked up this planet, and I was coming through, and then something blew. Next thing I knew I 

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