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The Explanatory Power of Mechanisms

There are quantitative and qualitative approaches to discovering causes in science. Quantitative approaches involve numeric values. The search for mechanisms falls on the qualitative side where the concern is not just with the what causes what and how often, but also with the how and the why. There can be some cases of strong support for a causal hypothesis on the grounds of mechanistic knowledge alone rather than evidence of a frequency of occurrence or repetition. Some traditional conceptions of mechanism involve a necessitating role on the production of effects. Mechanisms need not play a necessitating role in causation, however, nor need they involve activity in an occurrent sense.