“συμφωνειν” in Plato's Phaedo

In Socrates' account of his earlier investigations into the nature of causation in the "Phaedo", he describes a method that uses hypotheses. He posited as true those propositions that appeared to harmonize ("sumphonein") with his hypothesis and as false those propositions that failed to harmonize with his hypothesis. Earlier commentators on this passage have maintained that it is impossible to give a univocal reading of the occurrences of "sumphonein"' such that the method that Socrates describes is at all reasonable. It is argued in this paper that such a reading is possible.