... experience the tang of lemon, the whiff of woodsmoke, the colour of ripe tomatoes, or the sting of anettle. And the issue raised here by the absent qualia argu-ment is whether the existence of such ... states of consciousness to other human beings, so that to deny consciousness to the hypothetical pile of pebbles in the circumstances envisagedwould be to succumb to narrow-minded prejudice, of the ... friends of functionalismmay want to respond to this argument, other than byresorting to an outright denial of the existence of ‘qualia’altogether.8Some may contend that the hypothesis of spec-trum...