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The problem with that argument is that the world in which scores of people are spontaneously re-inventing the same thing, is not the same world in which that in
by URSpider94 15y ago
The problem with that argument is that the world in which scores of people are spontaneously re-inventing the same thing, is not the same world in which that invention was made. It's entirely possible for something to be non-obvious when it is invented, then to become completely obvious later.