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"Human beings hardly ever learn from the experience of others. They learn; when they do, which isn't often, on their own, the hard way."
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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).
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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Science Fiction
Timeline
Biohybrid Robots Made Of Living And Synthetic Materials
'If the biological robots were not living creatures, they were certainly very good imitations.'
Poul Anderson's 'Brain Wave'
"Everybody and his dog, it seemed, wanted to live out in the country; transportation and communication were no longer isolating factors."
AI Note-Taking From Google Meet
'... the new typewriter that could be talked to, and which transposed the spoken sound into typed words.'
Qore IcePlates Are Personal Cooling Suits
'... underneath they consisted of networks of cooling tubes against the skin.'
Waymo Cars Shout At Each Other, Autonomously
'My cars talk to one another. I have no doubt about it...'
Seeing Faces On Grains Of Sand (AI Pareidolia)
'... the imprint of her image on the telephoto cell.'
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