the voices in this analogy are not claimed to be unknowable full stop, merely irreconcilable with some or all of their previous understanding of the world. in non-analogical terms i am not saying we cannot explain subjectivity at all, but that we cannot explain it with our traditional ways of thinking (i am against dualism as much as physicalism). back to the analogy, it may be perfectly 'rational' to dismiss the transmission theory, but it would be rationally incorrect, rationally ignorant, and would prevent exploration of alternative routes of inquiry that could hypothetically lead to the truth.