Basically, things that you think are innate are not. If you don't educate humans they end up pretty much literally as intelligent as fucking animals. All that exists to them is the concrete world. They are incapable of logic and reason and abstract thought. The Russians reported that it would sometimes take a whole fucking night for the smartest man in the village to divide up money. For example, imagine the boyar pays a bunch of peasants to do some work on his manor, and then gives all the pay to the reeve to hand out. The reeve has to distribute the pay equally among five people. That's not necessarily a trivial sum, sure, especially for a retard, but it also shouldn't take a whole fucking night. Or consider this famous example: