Nor should we infer that irony is, at least in Plato, the expression of something that is false, a lie or an intentional deception. What makes Socratic irony in particular so complicated is that the statements in question are in different ways both false and true. Again, the true kernel in the statement is not necessarily just the opposite of what the statement seems to mean, as might be the case with a merely sarcastic statement; it might be something different from what is conveyed by the surface meaning of the words. When Socrates professes ignorance, for example, it is false that he is simplistically ignorant, but perhaps true that in some deeper sense he is indeed ignorant—and in a way that shows a certain kind of knowledge. (Charles L. Griswold, “Irony in the Platonic Dialogues,” Philosophy and Literature, 2002.)
Notice the knots in which the interpreter is tied: Socrates’ professions of ignorance are false, though perhaps true, but the way in which they are true, if they are, is that they are false, because he has a certain kind of knowledge. Socratic statements are both false and true, but what is true about them is not merely a negation of what is said, but somehow hidden in what is said, so that one must always shun the “surface” meaning in favor of some “deeper sense.” One must be wary of interpreting him “simplistically,” because Socratic irony is “so complicated.” Such an approach to the text makes it very difficult to encounter, evaluate, and be personally challenged by Socrates’ arguments. One suspects that may even be the point.