If anything, she held the gun more firmly, and moved it three inches toward him.
"Don't mistake me, Ralph," she said, her eyes cold. "This is a yes and no game. No maybes or ifs. If you say yes when the gun says no, that's too bad. If you say no when the gun wants yes, that's too bad. You see how straightforward the three of us are?
"But I and my pet neutron gun will give you time to think.
"Tell me how you found X."
He slumped weakly against the bulkhead, wiping at his forehead with the back of a shaking hand.
"There were enough clues," he said hoarsely.
And there had been, at that. Tertium Organum, A Key To The Enigmas Of The World, was a key. Its author, Ouspensky, looked at the universe from a different viewpoint.
The small u in unterzuyder meant that it was to be taken as a common noun.
And certainly the conclusion that the map was made 50,000 years ago was itself an obvious clue!