James Holden looked at Tim Fisher. "And if you'll promise to keep this thing as close a secret as you would some information about atomic energy, I'll go to bed and let you settle your personal problems in private. Good night!" He left, reasonably satisfied that Tim Fisher would probably keep their secret for a time, at least. The hinted suggestion that this was as important a government project as the Atomic Energy Commission's works would prevent casual talk. There was also the slim likelihood that Tim Fisher might enjoy the position of being on the inside of a big secret, although this sort of inner superiority lacks true satisfaction. There was a more solid chance that Tim Fisher, being the ambitious man that he was, would keep their secret in the hope of acquiring for himself some of the superior knowledge and the advanced ability that went with it. But James was certain that the program that had worked so well with Mrs. Bagley would fail with Tim Fisher. James had nothing material to offer Tim. Tim was the kind of man who would insist upon his wife being a full-time wife, physically, emotionally, and intellectually. And James suddenly realized that Tim Fisher's own ambition and character would insist that Mrs. Bagley, with Martha, leave James Holden to take up residence in a home furnished by Tim Fisher upon the date and at time she became Mrs. Timothy Fisher. He was still thinking about the complications this would cause when he heard Tim leave. His clock said three-thirty. * * * * * James Holden's mechanical educator was a wonderful machine, but there were some aspects of knowledge that it was not equipped to impart. The glandular comprehension of love was one such; there were others. In all of his hours under the machine James had not learned how personalities change and grow. And yet there was a textbook case right before his eyes. In a few months, Janet Bagley had changed from a frightened and belligerent mother-animal to a cheerful young prospective wife. The importance of the change lay in the fact that it was not polar, nothing reversed; it was only that the emphasis passed gradually from the protection of the young to the development of Janet Bagley herself. James could not very well understand, though he tried, but he couldn't miss seeing it happen. It was worrisome. It threatened complications. There was quite a change that came with Tim Fisher's elevation in status from steady date to affianced husband, heightened by Tim Fisher's partial understanding of the situation at Martin's Hill. Then, having assumed the right to drop in as he pleased, he went on to assume more "rights" as Mrs. Bagley's fiancé. He brought in his friends from time to time. Not without warning, of course, for he understood the need for secrecy. When he brought friends it was after warning, and very frequently after he had helped them to remove the traces of juvenile occupancy from the lower part of the house.