 Secondly we discuss Lakatos’s big ideas, the two contributions that constitute his chief claims to fame as a philosopher, before moving on (thirdly) to a more detailed discussion of some of his principal papers. We conclude with a section on the Feyerabend/Lakatos Debate. Lakatos was a provocative and combative thinker, and it falsifies his thought to present it as less controversial (and perhaps less outrageous) than it actually was.