The standard p-zombie argument still has a problem explaining why p-zombies claim to be conscious. It leaves no role for consciousness in explaining why conscious humans talk of being conscious. It's a short road (for a philosopher) to then argue that consciousness plays no role, and we're back with consciousness as either an epiphenomenon or non-existent, and the problem of why -- especially when consciousness is conceded to exist, but cause nothing -- the non-conscious system claims to be conscious.
Even worse, the question of how the word "conscious" can possibly even refer to this thing that is claimed to be epiphenomenal, since the word can't have been invented in response to the existence or observations of consciousness (since there aren't any observations). And in fact there is nothing to allow a human to distinguish between this thing, and every other thing that has never been observed, so in a way the claim that a person is "conscious" is perfectly empty.
ETA: Well, of course one can argue that it is defined intensionally, l...
Another month has passed and here is a new rationality quotes thread. The usual rules are: