My kind of blah

From Risk, Uncertainty and Profit:

"Every event has an infinite number of causes, and it depends on circumstances, the point of view, the problem in had, which of these we single out as 'The' cause. 'The' cause of of a phenomenon is merely that one of its necessary conditions which is for some practical reason crucial, generally from the standpoint of control. It is the one about which we must concern ourselves, the circumstances enabling us to take the others for granted. It may be quite correct to name a dozen different antecedents as 'the' cause of a particular occurrence, according to the point of view."