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"[Science fiction] is the one literary medium left in which we have a free hand. We can do any damn thing we please."
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The idea of a steam cannon dates back to Leonardo da Vinci at least (and possibly as far back as Archimedes); take a look at this web page at MIT regarding a very successful steam cannon.
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Paralysis Ray Uses Photocontrolled Molecular Switch
Gerry was dubious. She had seen abortive attempts at paralysis rays before.
Walky iPhone Finger Gesture Robot Controller
Let your fingers - uh - your robot do the walking. And hopping.
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