Masaru Iwai, a Ph.D. graduate from Tokyo University of Arts, tells me that he only showers once every two days. This fact causes the two gallery directors in the room to gasp in horror. In an ill-advised moment of sharing I let slip that in Britain this wouldn't be so unusual. It's not that Iwai is a slob, or an Anglophile, but that the notion and value of "cleanliness" are not to be taken at face value — they should be questioned and considered as socially constructed phenomena.