one of the first five canons of empirical science, the second canon to be specific which were first proposed by British philosopher John Stuart Mill (1806 – 1873) which establishes sufficient conditions for a phenomenon to occur. For example, if CONDITION 1 is true, EVENT 1 will occur but if CONDITION 1 is changed to 2, EVENT 1 will not occur.
METHOD OF DIFFERENCE: “The method of difference was one of the first five empirical canons of science which John Stuart Mill established.”