In his analysis of how pleasure works, Freud argued that repetition – the act of doing or experiencing something over and over again – can, in its compulsiveness, be highly enjoyable. The grandaddy of psychoanalysis might, in that case, have enjoyed a number of designs presented at last month's Interieur 2010 design biennale, which play with the idea of repetition, both formally and in terms of the notion of play itself.