In his "an ambiguity in the "sophist"," gregory vlastos showed that statements about forms in the central section of the "sophist" may be either 'ordinary' or 'pauline' predications. This paper refutes vlastos's claim that plato was "utterly unaware" of this ambiguity. 255c-e is taken to be the crucial passage here. This paper adapts the interpretation given by michael frede of this passage and shows that the sense of plato's partaking- terms (which are used to analyze statements about forms) switches from (...) a 'pauline' to an 'ordinary' usage at a definite point in the text which falls at the end of the crucial passage. the context and content of the passage determine that the switch is deliberate on plato's part. An analysis of an earlier passage, 250a-e, confirms this point. (shrink)