 The fact that some users of “Socrates” don’t realize that Socrates taught Plato does not immediately show that the proposition is a posteriori. It could be that they are ignorant of the meaning of “Socrates”, and if they had known it, they would also have known (a priori) that Socrates taught Plato. The same goes for the intuition that it could turn out that Socrates did not teach Plato. This intuition could similarly originate in obscuring ignorance of meaning. It should be kept in mind that the argument we are considering in this section (often termed the epistemic argument) takes for granted that if “Socrates” had a meaning, we would know what it was, and be in a position to draw a priori conclusions from it.