"One of many challenges is of course to create a legal basis for copyright issues that's up to date with both modern distribution, consumer behavior and the rights and needs of creators and copyright holders."

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We have seen that in certain respects operant reinforcement resembles the natural selection of evolutionary theory. Just as genetic characteristics which arise as mutations are selected or discarded by their consequences, so novel forms of behavior are selected or discarded through reinforcement.

— B. F. Skinner