  Critics of the HO view have disputed that account, and some have argued that the notion of unconscious qualia on which it relies is incoherent (Papineau 2002). Whether or not such proposed HO accounts of qualia are successful, it is important to note that most HO advocates take themselves to be offering a comprehensive theory of consciousness, or at least the core of such a general theory, rather than merely one limited to some special meta-mental forms of it.