 What ultimately makes the priest disbelieve what they've seen, despite his faith?
Naturally they did not get results at once, nor did they expect to; it required a fine adjustment. As though there were but one city, if that is its form. There was one more test to run, one very tricky and difficult of analysis, that with the Extraordinary Perception Locator. But this might be so varied or so unfamiliar that often both the machine and the designer of it were puzzled as to how to read the results. But when the Locator had refused to read Positive when turned on the inventor himself, bad blood developed between machine and man. It was for this reason that Glaser used that model no more, but built others more amenable. And there was no denying that the Extraordinary Perception Locator (or Eppel) was a contrary machine. On Earth it had read Positive on a number of crack-pots, including Waxey Sax, a jazz tootler who could not even read music. But it had also read Positive on ninety per cent of the acknowledged superior minds of the Earth. He then narrowed to a smaller area (apparently one individual, though this could not be certain) and got very definite action. So among the intelligences there was at least one that might be extraordinary, though possibly in a crackpot way. And one could only wish that all people were like them. There was a man and a woman, and they were clothed either in very bright garments or in no garments at all, but only in a very bright light. I don't understand that light that surrounds them.
 Someone like Adam would not be afraid of playing checkers, or being personable.
 He senses the "unusual mind" of Adam, and it made him uneasy.  He is too faithful to risk trusting what they've seen.  Someone like Adam would not be afraid of playing checkers, or being personable.  The illusion is too perfect, and it feels inauthentic to him.