QUOTE : We should finally note a more radical challenge to the concept of Platonic utility that arises from nascent work in the reinforcement learning field under the rubric of intrinsic motivation. One idea is that the "true" evolutionarily appropriate metric for behavior is the extremely sparse one of propagating ones genes. What we think of as a Platonic utility over immediate rewards such as food or water, would merely be a surrogate that helps overcome the otherwise insurmountable credit assignment path associated with procreation. In these terms, even the Platonic utility is the same sort of heuristic expedient as the Pavlovian controller itself, with evolutionary optimality molding approximate economic rationality to its own ends. It as a sober thought that understanding values may be less important as a way of unearthing the foundations of choice that we might have expected.