“Imagine you have no objects, well, all I can do with no objects is pick up none of them.” It sounds like a teasing philosophical line from Waiting for Godot but in fact, it’s part of the logic used by Bristol University mathematician Conor Houghton to explain the inner workings of Samuel Beckett’s 1981 play for television, Quad – Beckett’s only play to be inspired by dance. Houghton’s entertaining lecture in Enniskillen’s Ardhowen Theatre is the prelude to a rare performance of Quad, in a joint production by Pan Pan Theatre and Irish Modern Dance Theatre. Houghton’s lecture, however, begins…