In Phenomenology of Perception Merleau-Ponty tells us of how the phenomenon unfolds and its unfolding is never complete: there is no total view of being to be had. Being as phenomenon is, because of this, non-objective: it is disclosed, as Heidegger would put it, in proportion to its being concealed. Both Heidegger and Merleau-Ponty suggest, in their different ways, that this obscure counterpart to the disclosed world, forgotten in objective thought and instrumental rationality, is nonetheless shown, made visible, in art. That is to say, paraphrasing Heidegger, that art shows the concealed as concealed. Conceptual art and its 'dematerialisation of the art object' that the art critic Lucy Lippard described during its early days, have not ...