daylight to begin our re-survey of the planet. It was Charlie's first assignment, so we had an easy one—just seeing if anything new had developed in the last fifty years.

Baxter's guard was doubled as soon as we set down, of course, and that made him fidgety. He had heard all the stories about how high the casualty rate was with Prones aboard spaceships and now he was beginning to get nervous.

Actually Charlie was safer in space than he would be back on Earth with all those cars and people. We could have told him how the Service practically never lost a Prone—they were too valuable and rare to lose—but we did not want him to stop worrying. The precautions we took to safeguard him, the armed men who went with him everywhere, the Accident Prone First Aid Kit with spare parts for him, blood, eyes, bone, nerves, arms, legs, and so forth, only emphasized to him the danger, not the rigidly secured safety.

We like it that way.

No one knows what causes an accident prone. The big insurance companies on Earth discovered them when they found out in the last part of the nineteenth century that ninety per cent of the accidents were happening to a few per cent of the people. They soon found out that these people were not malingering or trying to defraud anybody; they simply had accidents.

I suppose everything from psychology to extra-sensory perception has been used to explain or explain away prones. I have my own ideas. I think an accident prone is simply a super-genius with a super-doubt of himself.

I believe accident prones have a better system of calculation than a cybernetic machine. They can take everything into consideration—the humidity, their blood sugar, the expression on the other guy's face—and somewhere in the corners and attic of their brain they infallibly make the right choice in any given situation. Then, because they are incapable of trusting themselves, they do exactly the opposite.

I felt a little sorry for Charlie Baxter, but I was Captain of the Hilliard and my job was to keep him worried and trying. The worst thing that can happen is for a Prone to give up and let himself sink into the fate of being a Prone. He will wear the rut right down into a tomb.

Accident Prones have to stay worried and thinking, trying to break out of the jinx that traps them. Usually they come to discover this themselves, but by then, if they are real professionals with a career in the 

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