Whether or not an entity (man or god) is needed to cause teleology to happen is one of the most important questions. All cultures we know of have creation stories in their religions. However, much of science operates on the principle that the natural world is self-organising. This applies particularly to astronomy and biology, which were once explained as the action of a deity, and are now seen as natural and automatically self-organising. Cybernetics is the basic science of self-organising systems.