This discussion concerns whether philosophical materialism is false or not. The exchange between Graham Harman and Javier Pérez-Jara goes to the core of the present book: what is materialism, how many varieties are there, and what use are they today? While Harman identifies materialism with reductionism, Pérez-Jara offers a broader definition that includes non-reductionist materialisms. It might seem to be just as a matter of differing definitions. And yet, each approach gives rise to a whole different way of reconstructing the (...) history of philosophy as well as of deciding which are the current available options in metaphysics. (shrink)