 In responding to Clarke’s Defense, Collins claims that Clarke has not properly enumerated the kinds of properties. He claims that Clarke needs to show that his enumeration is complete but has not done so. There may be powers unknown to Clarke that need to be included in order to give a complete enumeration of the properties and powers of matter. In order to effectively defend his materialist account of consciousness, however, Collins points out a new class of properties that are arguably real and that are emergent and do not fit Clarke’s composition model for real properties of matter.