What is superstition? According to The Little Oxford Dictionary, superstition is "belief in the existence or power of the supernatural; irrational fear of the unknown; a religion or practice based on such tendencies; widely held but wrong idea." Let us examine that definition in depth. First, there is "belief in the existence or power of the supernatural". This means that there is believed to be some force that can influence the events on the Earth. Second, there is "irrational fear of the unknown." This has been endemic to the human race since the early days when a cave man did not know if that cave was safe to enter or if he would be attacked by a bear. Third, "a religion or practice based on such tendencies." This is the belief that a charm or talisman, such as throwing salt or hanging a horseshoe over the doorway, can affect the aforementioned supernatural force. Finally, there is a "widely held but wrong idea." This is a belief that is believed only because everyone else believes. It may be wrong, it may be preposterous, but all the other people think it is right and you believe it too. Why do people believe in something that can be scientifically proven wrong? They may want a simple explanation for a coincidence. For example, a woman plants a tree in her yard and the weather is warm for the rest of the month. She reasons that planting trees causes warm weather. That is a simple, obvious conclusion. A weatherman will give a long, confusing explanation such as "Various meteorological factors caused displacement of the cold front." The woman will believe her own explanation because it is simple and easily understood. Once one person believes this conclusion, others will believe too. Perhaps the woman will be gossiping with some friends, and she mentions her tree superstition. They tell others and soon the whole town believes that trees cause warm weather. Some examples of common, everyday superstition include the belief that the nu...