 What isn't a reason for narrator to be so skeptical of Gorb?
My three staff men, Auchinleck, Stebbins and Ludlow, walked shieldwise in front of me. It's the best of its kind, the only really decent place where Earthmen can get a gander at the other species of the universe. I passed him along to Auchinleck to sign at anything short of top rate. And now, please, there are many applicants waiting—" You'd think it would be sort of humiliating to become a specimen in a zoo, but most of these races take it as an honor. And there's always the chance that, by picking a given member of a race, we're insulting all the others.
 Gorb was asking for too much money
 Gorb looked just like an Earthling  Gorb was asking for too much money  Gorb had no proof to back up his claims  he had never heard of Wazzenazz