 Why is it important to watch the ones who don't become physically ill during the conditioning process?
Rootless and footloose, a man in space can't help but dream of coming home. But something nobody should do is bet on the validity of a homesick dream! Flight Officer Robert Craig surrendered the tube containing his service record tapes and stood waiting while the bored process clerk examined the seal. He felt anxiety as the much-handled card refused for a time to match the instrument's metal contact points. "Los Angeles, eh? "No specific destination," supplied the man as he punched a key on a small instrument, "Air-lock ahead and to your right. The knowledge that much of it was motivated by envy soothed him as he clumsily let himself into the lock. "Place your clothing in the receptacle provided and assume a stationary position on the raised podium in the center of the lock." Craig obeyed the robot voice and began reluctantly to remove his flight jacket. It was impossible to hate a robot, but one could certainly hate those who set it into operation. "You will find a red button at your feet. A small scratch on his arm stung briefly and he was somewhat blinded by the flash even through his eyelids, but that was all there was to the sterilizing process. "Insert your right arm into the instrument on the central table," commanded the same voice he had heard before. "Turn your arm until the scratch is in contact with the metal plate. There will be a slight pain, but it is necessary to treat the small injury you have been disregarding." When he withdrew his arm, the scratch was neatly coated with a layer of flesh-colored plastic material. "No, but my father—" "Your parents left Terra during the Second Colonization of Cassiopeia II, didn't they?" He was uncomfortable; Wyandotte seemed to know all about him. "I've never been down for any period as yet." "Oh, I've landed a few times, even walked around for a while...." "Mr. Craig, I suppose you've guessed that the next step in our little torture system here is psych." Short of Gravitational conditioning, there is nothing to stop you from going to Terra." "Conditioning?" asked Craig. Your body is conditioned to a normal state of free fall, or at best to a state of acceleration." "You were ill, couldn't keep your balance, felt dizzy. It helps suppress certain physiological reactions to an entirely new set of conditions.
 Their bodies' familiarity with gravity naturally makes them suspicious
 They could be tapped as leaders for Freedomite missions  It is a sign that they are deviant extraterrestrials  Their bodies' familiarity with gravity naturally makes them suspicious  Their bodies may naturally produce paraoxynebutal