I just finished reading an interesting hard science fiction book called The Punch Escrow. The story takes place several decades in the future, and it revolves around the idea of quantum foam and teleportation. It points out why teleportation never may be practical, but it brings up the idea of human 3D printing, which could be used more effectively for space exploration. However, it also would have a massive number of other uses, both good and bad, which got me thinking about what else could change our future in a massive way.
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