An ant is a simple organism. But an ant colony can build fascinatingly complex things, such as shaft systems to ventilate their nests. Despite simplicity of a neural cell, a system of neurons generates profoundly intricate phenomena such as the character of a person. Individual characters are, on the other hand, often in sharp contrast with the customs that spontaneously emerge in societies.
Most elaborate functions in natural systems typically require no central control. Instead, they emerge as collective behavior of many mutually interacting units, such as ants or neurons. Technology also relies on this paradigm, as modern life is unthinkable without Internet or mass transport.