A healthy spine is a gentle S-shape, with alternate lumbar and thoracic curves. In Taiji we sink into the legs in order to become all spine – the bent legs become the lumbar curve – and the whole body, from foot to head becomes an S-shape. There is something about the S (half an 8 or an opened 8) that works as principle: on all levels at all scales in all dimensions. Reality a shimmer of voices.