Voigt-Kampf is a struggle
Hence Deckard-Descartes's self-misrecognition, a machine that thinks but thinks it is what it is not, certain that it is not what it is, ironically answering his own question, 'how can it [i.e., Rachel] not know what it is?' All the games of Cartesian dualism are played out in the Voigt-Kampf duel,…