James Holden's work was a strangely crude efficiency. The prototype had been built by his father bit by bit and step by step as its design demanded. Sections were added as needed, and other sections believed needed were abandoned as the research showed them unnecessary. Louis Holden had been a fine instrumentation engineer, but his first models were hay-wired in the breadboard form. James copied his father's work--including his father's casual breadboard style. And he added some inefficiencies of his own. Furthermore, James was not strong enough to lift the heavier assemblies into place. James parked the parts wherever they would sit. To Mrs. Bagley, the whole thing was bizarre and unreasonable. Given her opinion, with no other evidence, she would have rejected the idea at once. She simply did not understand anything of a technical nature. One day she bluntly asked him how he knew what he was doing. James grinned. "I really _don't_ know what I'm doing," he admitted. "I'm only following some very explicit directions. If I knew the pure theory of my father's machine I could not design the instrumentation that would make it work. But I can build a reproduction of my father's machine from the directions." "How can that be?" James stopped working and sat on a packing case. "If you bought a lawn-mower," he said, "it might come neatly packed in a little box with all the parts nested in cardboard formers and all the little nuts and bolts packed in a bag. There would be a set of assembly directions, written in such a way as to explain to anybody who can read that Part A is fastened to Bracket B using Bolt C, Lockwasher D, and Nut E. My father's one and only recognition of the dangers of the unforeseeable future was to drill deep in my brain these directions. For instance," and he pointed to a boxed device, "that thing is an infra-low frequency amplifier. Now, I haven't much more than a faint glimmer of what the thing is and how it differs from a standard amplifier, but I know that it must be built precisely thus-and-so, and finally it must be fitted into the machine per instructions. Look, Mrs. Bagley." James picked up a recently-received package, swept a place clear on the packing case and dumped it out. It disgorged several paper bags of parts, some large plates and a box. He handed her a booklet. "Try it yourself," he said. "That's a piece of test equipment made in kit form by a commercial outfit in Michigan. Follow those directions and build it for me." "But I don't know anything about this sort of thing." "You can read," said James with a complete lack of respect. He turned back to his own work, leaving Mrs. Bagley leafing her way through the assembly manual.