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"A good science fiction story should be able to predict not the automobile but the traffic jam."
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![]() This idea can now be seen in most major airports; they're called passenger conveyor belts. Heinlein also wrote about a more "pedestrian" version - the slidewalk.
This is probably a Heinlein rediscovery; you can read an earlier version of this concept - the moving roadway from H.G. Wells' 1899 story When the Sleeper Wakes. The first commercial passenger conveyor belt was built in 1954 (by Goodyear for the Hudson and Manhattan railroad).
Even earlier, the street slides from Mrs. Maberly: Or, The World as it Will be (1836) by an Anonymous Author.
By the way, the "electric stairway", or escalator, was introduced in 1900.
See also the speed belt (ribbon conveyor) from Slaves of Mercury (1932) by Nat Schachner. Comment/Join this discussion ( 3 ) | RSS/XML | Blog This | Additional
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