Drum Messages (Book Four, Card 32)

Drums were invented and used by societies living in forested areas as an early form of long-distance communication and for ceremonial and religious purposes. Drum communication methods are based on actual natural languages and are not languages in and of themselves. The noises made are idiomatic or conventionalised signals based on speech patterns. Typically, the messages are stereotyped and context-dependent. They are incapable of creating new combinations and expressions.