  According to Fodor, this metaphysical justification is unwarranted. To begin with, some actions change many, many things. Those who affirm that painting an object has little or no effect on most properties of most of the objects in the room are likely to concede that detonating a bomb actually does affect most of those properties. But a deeper difficulty presents itself when we ask what is meant by “most properties”. What predicates should be included in our ontology for any of these claims about “most properties” to fall out? To sharpen the point, Fodor introduces the concept of a “fridgeon”. Any particle is defined as a fridgeon at a given time if and only if Fodor's fridge is switched on at that time. Now, it seems, the simple act of turning Fodor's fridge on or off brings about an astronomical number of incidental changes. In a universe that can include fridgeons, can it really be the case that most actions leave most things unchanged?