The ways in which we do not know things are just as important (and perhaps even more important) as the ways in which we know them … It is possible, in fact, that the way in which we are able to be ignorant is precisely what defi nes the rank of what we are able to know and that the articulation of a zone of nonknowledge is the condition – and at the same time the touchstone – of all our knowledge . 1 – Giorgio Agamben

Karl Marx, in the eleventh of his Theses on Feuerbach , declared that the philosophers had only ever interpreted the world. In doing so, they had missed the point that philosophy, as a discipline, is meant to change the world. 2 If this is philosophy’s purpose, then the most important question to ask is how, exactly, should the world be changed?