The computational theory of mind has its roots in Alan Turing’s development of the basic ideas behind computer programming, specifically the manipulation of symbols according to rules. That idea has been elaborated since in a number of very different ways, but in some form it remains a core idea of the cognitive sciences today. In Explaining the Computational Mind (MIT Press, 2013), Marcin Milkowski, Assistant Professor of Philosophy at the Institute of Philosophy of Mind of the Polish Academy of Sciences, defends a minimalist view of computationalism as information processing, with the intention of providing a general view of computational explanation that covers all the forms in which information-processing explanations appear. On Milkowski’s view, Jerry Fodor’s slogan that there is no computation without representation should be replaced with the claim that there is no representation without computation, and David Marr’s computational, algorithmic, and implementation levels for describing of complex systems should be replaced with talk of different compositional levels in mechanistic explanation.