He doesn't know. He may suspect but in the end, he doesn't care. That is the epiphany. Before he might have been trying to win an argument and make a point but

He doesn't know. He may suspect but in the end, he doesn't care. That is the epiphany. Before he might have been trying to win an argument and make a point but in the end, facing death, he doesn't care to kill one more time. BTW, the bird is probably artificial. Rachael: Do you like our owl? Deckard: It's artificial? Rachael: Of course it is. Deckard: Must be expensive. Rachael: Very. I'm Rachael.