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"I'm a farm boy. It's very interesting; you can detect self-starting characteristics in this society and they are strongest among people who have had some kind of rural upbringing and a very impressionable stage."
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![]() In this excerpt, the unthinkable has happened; the rolling roads have been sabotaged. Chief Engineer Gaines assembles his maintenance cadets and sets out to inspect and repair the damage.
Here's what they thought it would look like in 1940:
![]() (Heinlein tumblebug from Astounding SF June 1940) The oddest thing about a tumblebug is that it relies on "gyro-stabilization" the way we normally rely on two wheels. The Segway, a two-wheeled conveyance, similarly relies on gyro-stabilization. Here's another illustration, and a quote (they don't write them like this anymore):
Be sure to see how a modern company has created a monocycle concept vehicle similar to the tumblebug: read EMBRIO Embodies the Tumblebug. Closer yet, read about the Eunicycle Gyro-Stabilized Single Wheel Scooter. Compare to the gyrocar from Two Boys in a Gyrocar the story of a New York to Paris motor race (1911) by Kenneth Brown, the Gyro-Hat from An Experiment in Gyro-Hats (1926) by Ellis Parker Butler, the Two-Wheeled Ground Car from First Lensman (1950) by E.E. 'Doc' Smith, the Gyro Two-Wheeled Truck from The Sign of the Tiger (1958) by Alan Nourse (w/Meyer), the Gyrocar (Gyro) from The Ring (1969) by Piers Anthony (w/R. Margroff) and the smart bike from Distraction (1998) by Bruce Sterling. Comment/Join this discussion ( 0 ) | RSS/XML | Blog This | Additional
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Science Fiction
Timeline
Could Increased Space Rocketry Damage The Ozone Layer?
'...without burning a single hydrocarbon molecule to injure the diseased atmosphere any further.'
Festo BionicSwift Bird Robots Described In 1930
'Bird-like robots now descended from the ceiling of the theatre...'
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'The efficient robot waiter of the Sky Club had cleared away the remnants of an epicurean meal.'
Prototype 3D Printer Could Print Arteries In Seconds
'...in the tank the new body and the new mind and memory and life has taken almost instant form.'
China Wants 'Hard Kill' Capability To Counter Starlink Satellites
'pirate three-vee satellites sanded out of orbit...'
Low-Cost Gel Pulls Water From Atmosphere Like Star Wars Vaporator
'The atmosphere yielded its moisture with reluctance. It had to be coaxed down...'
Pleasure Model Replicants Now Available
'Want a life-companion... sir, I can get you up any style you want.'
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