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Robert A. Heinlein - Common Sense
Atec Февраль 27 2008 22:54:42


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Hugh Hoyland did not know that. So he went ahead and did it anyhow.
In which attempt he was aided by the genius of the designers. The controls of most machinery may be considered under the head of simple pairs, stop-and-go, push-and-pull, up-and-down, in-and-out, on-and-off, right-and-left, their permutations and combinations. The real difficulties have to do with upkeep and repair, adjustment and replacements.
But the controls and main drive machinery of the starship Vanguard required no upkeep and no repair; their complexities were below the molar level, they contained no moving parts, friction took no toil and they did not fall out of adjustment. Had it been necessary for him to understand and repair the machines he dealt with, it would have been impossible. A fourteen-year-old child may safely be entrusted with a family skycar and be allowed to make thousand-mile jaunts overnight unaccompanied; it is much more probable that he will injure himself on the trip by overeating than by finding some way to mismanage or damage the vehicle. But if the skycar should fall out of adjustment, ground itself, and signal for a repair crew, the repair crew is essential; the child cannot fix it himself.
The Vanguard needed no repair crew, save for nonessential ancilliary machinery such as transbelts, elevators, automassagers, dining services, and the like. Such machinery which necessarily used moving parts had worn out before the time of the first Witness; the useless mass involved had gone into the auxiliary Converter, or had been adapted to other simpler purposes

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