“Artifacts, and, eventually, words can readily communicate semantic information from one brain to another without laborious episodic exploration by each individual. Instead, the grounding of meaning is simply achieved by guidance or approval from others. Externalized information can be named, and, therefore, it rapidly spreads semantic knowledge. This ability comes with a cost, though. We accept the definition of events and phenomena too often without personal experience, accumulating and using a huge vocabulary in which we do not understand the true meaning of many words.”