Winnicott was concerned with the infant's struggle to make the transition from a world of total subjectivity to a world in which objective events are subject to differences and are acknowledged to have a significance of their own. The symbolically constituted world of adults also contains transitional objects and transitional phenomena. Certain classes of signs operate just as transitional objects do in the imaginary world of an infant at play. In therapy adults may return to these preoccupations of children's play in search of more concrete objects on which the sub-identity may be fixed. Any therapist can provide countless examples of changes of identity taking place in the fantasies of word play in a