By deliberately manipulating the occurrence of its precursors the true cause of an event can be easi

By deliberately manipulating the occurrence of its precursors the true cause of an event can be easi

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By deliberately manipulating the occurrence of its precursors the true cause of an  event can be easily established. If all events except the “cause” are allowed to occur  and the “result” does not occur, and if only the cause is added and the “result” then  occurs; and if the removal of the cause again terminates the result then a cause- effect relationship has been established. If you were trying to discover to what you  were allergic, you would do similar research, adding and subtracting items from  your environment until you found what was causing the problem. Obviously, it is  very important to assure yourself that you have not confounded your experiment in  some way by adding or subtracting more than one thing at a time. You may wonder  why you would want to bring your allergic reaction back. But, only by doing that will  you be sure of its cause and only then will you be relatively sure you are not 
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By deliberately manipulating the occurrence of its precursors the true cause of an event can be easi

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