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, 19:42, March 7, 2009
'''Cause and effect''' is the basic principle of all action. A person makes a [[choice]] to move so as to have an [[effect]] in the world. Some choices are internal and therefore show no visible result, such as planning or repentance.
[[Scientist]]s try to discover the cause and effect relationships among physical phenomenon. For example, a [[bee]] sting may cause swelling in a victim. Or the moon's [[gravity]] affects the [[tides]].