A pattern is any set of correlations between the states of elements. Pattern formation refers to internally generated patterns. Systems that have the ability to self-organize. The creation of order from initial disorder. Emergent patterns without centralized control.Pattern formation is a pervasive feature in our world. In the ripple patterns in a sand dune. Flocking of birds. Schooling of fish. Swarming of insects. Ant foraging is another example of pattern formation. The same basic process that creates the striped pattern to zebras’ skin… creates the pattern of human fingerprints. In traffic patterns like gridlock. The formation and adoption of new cultures.