If chimps cannot form goal-based concepts, then necessarily, chimps are not naturally equipped to teach concepts to one another; that is, they don’t have social reality. Even if they could learn a concept like “Anger” from a human trainer, one generation doesn’t create the context for the next generation to bootstrap concepts into their brains. Chimps and other primates do have shared practices, like cracking nuts with rocks, but chimp mothers don’t spontaneously instruct their infants on the finer culinary points; the children learn by observation.
