Davidson has responded to such arguments by reformulating anomalous monism and has defended the improved version in "Thinking Causes". He points out that the defect in the so-called epiphenominalism problem lies in its confusion of the concept "by virtue of" (or necessary for) with the idea of an event's being responsible for another. Also, Honderich's example of the pears and the scale is jerry rigged in such a way that only a single effect is taken into consideration: the alteration on the scale. But the action of placing pears on a scale can have many different effects; it can attract the attention of a customer, for example. In this case, the causally relevant properties would be precisely the color, shape and other "irrelevant" properties of the fruit. What is relevant or irrelevant therefore depends, in part, on the context of explanatory interest.