A short man with thin hair arrived at Burke Development, Inc. His name was Keller, and his expression was pleasant enough, but he was so sparing of words as to seem almost speechless. Sandy watched as he unpacked the instruments in the massive shipping cases. The instruments themselves were meaningless to her. They had dials, and some had gongs, and one or two had unintelligible things printed on paper strips. At least one in the last category was a computer. Keller unpacked them reverently and made sure that not a speck of dust contaminated any one. When he carried them out to the hull, still concealed by the lath-and-plaster exterior mould, he walked with the solemn care of a man bearing treasure. That day Sandy saw him talking to Burke. Burke spoke, and Keller smiled and nodded. Only once did he open his mouth to say something. Then he could not have said more than four words. He went happily back to his instruments. The next day, Burke made what was intended to be a low-power test of the long iron bar he'd machined so painstakingly and wound so carefully before enclosing it in the bronze outer case. He'd worked on it for more than two weeks. He prepared the test very carefully. The six-inch test model had lain on a workbench and had been energized through a momentary-contact switch. The full-scale specimen was clamped in a great metal lathe, which in turn was shackled with half-inch steel cable to the foundations of the construction shed. If the pseudo-magnet flew anywhere this time it would have to break through a tremendous restraining force. The switch was discarded. A condenser would discharge through the windings via a rectifier. There would be a single damped surge of current of infinitesimal duration. Holmes passed on the news. He got along very well with Pam these days. At first he'd been completely careless of his appearance. Then Pam took measures to distract him from total absorption in the construction job, and he responded. Nowadays, he tended to work in coveralls and change into more formal attire before approaching the office. Sandy came upon him polishing his shoes, once, and she told Pam. Pam beamed. Now he came lounging into the office and said amiably, "The moment of truth has arrived, or will in minutes." Sandy looked anxious. Pam said, "Is that an invitation to look on at the kill?" "Burke's going to turn juice into the thing he's been winding by hand and jittering over. He's worried. He can think of seven thousand reasons why it shouldn't work. But if it doesn't, he'll be a pretty sick man." He glanced at Sandy. "I think he could do with somebody to hold his hand at the critical moment." "We'll go," said Sandy. Pam got up from her desk. "She won't hold his hand," she explained to Holmes, "but she'll be there in case there are some pieces to be picked up. Of him."