It is hard for a groundhog to dismiss the notion of weight. We seem to be born with an instinct which demands it. If one thinks of a vessel in a free orbit around the Earth, one is inclined to think of the direction towards the Earth as ‘down’, to think of oneself as standing or sitting on that wall of the ship, using it as a floor. Such a concept is completely mistaken. To a person inside a freely falling body there is no sensation of weight whatsoever and no direction of up-and-down, except that which derives from the gravitatioiial field of the vessel itself. As for the latter, neither Waldo’s house nor any space craft as yet built is massive enough to produce a field dense enough for the human body to notice it. Believe it or not, that is true. It takes a mass as gross as a good-sized planetoid to give the human body a feeling of weight
It may be objected that a body in a free orbit around the Earth is not a freely falling body. The concept involved is human, Earth surface in type, and completely erroneous. Free flight, free fall, and free orbit are equivalent terms. The Moon falls constantly towards the Earth; the Earth falls constantly towards the Sun, but the sideways vector of their several motions prevents them from approaching their primaries. It is free fall nonetheless. Consult any ballistician or any astrophysicist
Where there is free fall there is no sensation of weight. A gravitational field must be opposed to be detected by the human body
Some of these considerations passed through Stevens’s mind as he handwalked his way to Waldo’s workshop. Waldo’s home had been constructed without any consideration being given to up-and-down. Furniture and apparatus were affixed to any wall; there was no ‘floor’. Decks and platforms were arranged at any convenient angle and of any size or shape, since they had nothing to do with standing or walking. Properly speaking, they were bulkheads and working surfaces rather than decks. Furthermore, equipment was not necessarily placed close to such surfaces; frequently it was more convenient to locate it with space all around it, held in place by light guys or slender stanchions
The furniture and equipment was all odd in design and frequently odd in purpose. Most furniture on Earth is extremely rugged, and at least 90 per cent of it has a single purpose – to oppose, in one way or another, the acceleration of gravity. Most of the furniture in an Earth-surface – or subsurface – house is stator machines intended to oppose gravity. All tables, chairs, beds, couches, clothing racks, shelves, drawers, et cetera, have that as their one purpose. All other furniture and equipment have it as a secondary purpose which strongly conditions design and strength
The lack of need for the rugged strength necessary to all terrestrial equipment resulted in a fairylike grace in much of the equipment in Waldo’s house. Stored supplies, massive in themselves, could be retained in convenient order by compartmentation of eggshell-thin transparent plastic. Ponderous machinery, which on Earth would necessarily be heavily cased and supported, was here either open to the air or covered by gossamer- like envelopes and held stationary by light elastic lines
Everywhere were pairs of waldoes, large, small, and life-size, with vision pickups to match. It was evident that Waldo could make use of the compartments through which they were passing without stirring out of his easy chair -~ if he used an easy chair. The ubiquitous waldoes, the insubstantial quality of the furniture, and the casual use of all walls as work or storage surfaces, gave the place a madly fantastic air. Stevens felt as if he were caught in a Disney
So far the rooms were not living quarters. Stevens wondered what Waldo’s private apartments could be like and tried to visualize what equipment would be appropriate. No chairs, no rugs, no bed. Pictures, perhaps. Something pretty clever in the way of indirect lighting, since the eyes might be turned in any direction. Communication instruments might be much the same. But what could a washstand be like? Or a water tumbler? A trap bottle for the last – or would any container be necessary at all? He could not decide and realized that even a competent engineer may he confused in the face of mechanical conditions strange to him