 Criticism and the Growth of Knowledge (1970), edited by Lakatos and Alan Musgrave, was a second major contribution to the historicism debate. This collection of articles, originating from a 1965 London conference, was in significant respects a reaction to Kuhn; but it is especially important for Lakatos’s own contribution to the volume, “Falsification and the Methodology of Scientific Research Programmes” (MSRP), an attempt to accommodate a broadly Popperian perspective to some of Kuhn’s ideas and thereby to diverge from Popperian orthodoxy. Lakatos had long favored an historical approach to the philosophy of mathematics and science (see his 1976). One of his central concerns was to defend the rational continuity and progressiveness of modern science from the challenge of radical change. Another was to fend off charges of historical relativism.