Interesting, I'd always thought that idea was due to Asimov in The Caves of Stee... | Hacker News

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		hugh3 on Sept 3, 2011 \| parent \| context \| favorite \| on: Arthur C. Clarke Predicts the Future in 1964 … And... Interesting, I'd always thought that idea was due to Asimov in The Caves of Steel, but apparently the Heinlein predates the Asimov by 14 years. Unfortunately, fast-moving underground moving sidewalks sound like an incredible waste of energy.

stretchwithme on Sept 4, 2011 [–]

or tiny gears that only move when vehicles arrive and mesh with the bottom of them, carrying them along.

Would be nice to expend only the energy required to move people and things and anything needed to take care of them (safety systems)

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