Foucault calls it (after Bataille) a limit-experience, or the thought from outside. Lyotard calls it a differend, whilst for Kristeva it is the semiotic, or the abject. Derrida calls it many things: différance, trace, pharmakon, hymen, supplement, and gram. Sue Golding calls it a kind of dirty, bloody poetics, one which insists on, say, bodies and skin and smells and imagination in the face of it all.