 In response, the adverbialist might offer a causal analysis of experiences being of objects. They might thus attempt to fall back on the idea that an experience in which you sense whitely is an experience “of” a white thing insofar as it is causally related to a white thing (or, insofar as it is of a type, instances of which are typically caused by white things). However, as Butchvarov argues, the fact that “x is causally related to S’s sensing in a certain way can no more reasonably be described as S’s being conscious of [i.e. having a conscious experience of] x than the fact that the presence of carbon monoxide in the air is causally related to S’s having a headache can be described as S’s being conscious of [having a conscious experience of] carbon monoxide” (1980: 273).