 One worry for this view is that if qualia are to be handled in terms of representational content, then there had better be a content that is shared by veridical visual experiences and their hallucinatory counterparts. Disjunctivists have disputed the supposition that there is a common content (see, e.g., Hinton 1973, Martin 1997, Snowdon 1990). Perhaps veridical experiences have only singular contents and hallucinatory experiences have gappy contents or no content at all (for an extended discussion of visual experience and content, see Pautz 2010, Siegel 2011).