The document discusses what art is and its various functions. It explains that art is fundamentally human and built into our neurophysiology. Art serves functions like interacting with the divine, expressing power and status, changing perceptions, expressing imagination, telling stories, commemorating events, and transforming spaces. Symbols and iconography in art are highly contextual and depend on the culture and time period. The document provides many examples of art from different eras and cultures to illustrate these points.