'Several years ago, a student in a creative writing class told me about All encounter he had had at an art gallery: he had stood for some time observing an exhibit for which he could not find a mounted label—no details on artist, title, media. or year that the piece 'came into being'. After a short search. he realised that it really was 'just an unattended pile of dust and dirt and hair alongside a resting broom. Perhaps some gallery staff member had begun the sweep unprepared for-such a significant pile of visitor detritus, and had wandered off in search of a brush and dustpan. ' (Introduction)