 Why is Wyandotte didactic?
SEA LEGS By FRANK QUATTROCCHI Illustrated by EMSH [Transcriber's Note: This etext was produced from Galaxy Science Fiction November 1951. Extensive research did not uncover any evidence that the U.S. copyright on this publication was renewed.] 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." "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. "You know, metal ." 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. Stepping on the button with his bare foot produced an instant of brilliant blue illumination. When he withdrew his arm, the scratch was neatly coated with a layer of flesh-colored plastic material. "By 'home' you mean Terra. "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 was entered as a spaceman when I was 16," Craig said. "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." You have spent eleven years in space. Your body is conditioned to a normal state of free fall, or at best to a state of acceleration." Once on Gerymeade...." "You were ill, couldn't keep your balance, felt dizzy. That is why all spacemen carry PON, paraoxylnebutal, with them. It helps suppress certain physiological reactions to an entirely new set of conditions.
 He thinks Craig will be a fish out of water in Terran society.
 He is likely being monitored by the Terrans and cannot speak freely.  He thinks Craig is an uneducated hick.  He knows that gravity conditioning is horrible. He is trying to change Craig's mind about going to Terra.  He thinks Craig will be a fish out of water in Terran society.