Experiences and actions are not free. The larger your repertoire, the more calories you need, so there are selection pressures to keep these repertoires small. But if your repertoires are too small, you may lack essential data about fitness or critical actions that could enhance fitness. Different agents evolve different solutions, different ways to balance the competing forces of selection. Humans probably have a larger repertoire of experiences than beetles; bears have a larger repertoire of olfactory experiences than humans. There is no consummate solution—just workable schemes that let
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