Cause and effect (also written as cause-effect or cause/effect or cause and consequence) refers to the philosophical concept of causality, in which an action or event will produce a certain response to the action in the form of another event. The universe and everything in it are in flux, arising and ceasing, appearing and disappearing, in an unending cycle of change conditioned by the law of causation. All things are subject to the law of cause and effect, and consequently nothing can exist independently of other things.