Superstition is a belief in supernatural causality: that one event leads to the cause of another without any process in the physical world linking the two events. Superstition is often used pejoratively to refer to practices (e.g., Haitian Voodoo) other than the one prevailing in a given society (e.g., Christianity in western culture), although the prevailing religion may contain just as many supernatural beliefs. It is also commonly applied to beliefs and practices surrounding luck, prophecy and spiritual beings, particularly the belief that future events can be foretold by specific unrelated prior events.