intellectual property is very different from real property, because it is useless if you keep it to yourself. The abstract concept can be infinitely shared. This creates an apparent dilemma for those who would encourage inventors. People get rich by selling each other things (and services), not ideas. Manufacture the best bicycles and you profit handsomely; come up with the idea of the bicycle and you get nothing because it is soon copied. If innovators are people who make ideas, rather than things, how can they profit from them? Does society need to invent a special mechanism to surround new
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