“If it would have been possible for a person to stand on that box without leaving a track to it or from it, he might have finished the tracks with the shoes on a pole, but nobody went to that box.”
The Thinking Machine was silent for several minutes. Hatch had nothing to say. The Thinking Machine seemed to have covered the possibilities thoroughly.
“Of course, it might have been possible for a person in a balloon to have put the tracks there, but it would have been a senseless proceeding,” the scientist went on. “Certainly there could have been no motive for it strong enough to make a person invite discovery by sailing about the house in a balloon even at night. We face a stone wall, Mr. Hatch — a stone wall. It is possible for the mind to follow it only to a certain point as it now stan
