On the (Too) Many Faces of Consciousness

Pereira Jr., like some other authors, both likens and links consciousness to homeostasis. He accordingly recommends that some measures of homeostasis be taken into account as biomarkers for sentience in patients who are in a chronic vegetative state. He rightly defines 'sentience' as the capacity to feel (anything). But the message is scrambled in an incoherent welter of weasel-words for consciousness and the notion (in which he is also not alone) that there are two consciousnesses (sentience and 'cognitive consciousness'). I suggest that one 'hard problem' of consciousness is already more than enough.