Harris Williams imaginatively evokes, using the wisdom of the poets, the sensory experience of intrauterine life before what she calls the "shipwreck" of birth. In this world the placenta is the other, a soft responsive friend where the rhythms of heartbeat and syncopation of the noises of the intrauterine environment provide the first experience of otherness. Bion came to regard the idea of psychological twinning as less important, returning to a more Kleinian view of it as a variant of splitting processes. Bion describes the caesura. Bion came to regard the idea of psychological twinning as less important, returning to a more Kleinian view of it as a variant of splitting processes. In psychoanalytic work, the consideration of the therapist as a sibling in the transference can help the working out of competitiveness, rivalry, envy, and aggression, along with more positive feelings of companionship.