  Does Socrates produce good arguments against definition by examples? Many philosophers think not (McDowell 1976 (115), Geach 1966, Santas 1972, Burnyeat 1977). They often argue this by appealing to the authority of Wittgenstein, who famously complains (The Blue and Brown Books, 20) that “When Socrates asks the question, ‘What is knowledge?’, he does not regard it even as a preliminary answer to enumerate cases of knowledge.” For arguments against this modern consensus, see Chappell 2005 (36–37).