“We have to, in Cavell’s language, abrogate the knowing of other people in favour of the acknowledgement of their existence. We mustn’t let knowing do the work of acknowledging; otherwise we can end up disbelieving – that is, being unable to prove – the existence of other people and then of ourselves. Knowing other people, in psychoanalytic language, can be a defence, the defence, against acknowledging their actual existence, and what we need their existence for.”