<Li> Constitutional luck, that is, luck with factors that cannot be changed . Place of birth and genetic constitution are typical examples . </Li> <Li> Circumstantial luck--with factors that are haphazardly brought on . Accidents and epidemics are typical examples . </Li> <Li> Ignorance luck, that is, luck with factors one does not know about . Examples can be identified only in hindsight . </Li> <P> Another view holds that "luck is probability taken personally ." A rationalist approach to luck includes the application of the rules of probability and an avoidance of unscientific beliefs . The rationalist thinks that the belief in luck is a result of poor reasoning or wishful thinking . To a rationalist, a believer in luck who asserts that something has influenced his or her luck commits the "post hoc ergo propter hoc" logical fallacy: that because two events are connected sequentially, they are connected causally as well . In general: </P>

Where did the idea of luck come from