Benardete, Seth, "On Plato's Sophist," The Argument of the Action, Ronna Burger and Michael Davis, eds., Chicago: University of Chicago Press, 2000, 323-52.

Excerpt:

Once the stranger takes over the discussion at the beginning of the Sophist and agrees to discuss the sophist, the statesman, and the philosopher, it is hard to remember that Socrates had arranged to meet with Theodorus, Theaetetus, and young Socrates once more, even after he had left Theaetetus completely barren, at least temporarily, and had encountered resistance from Theodorus to his further participation in any argument that the interval of a single day could not, it seems, have overcome (Theaetetus 169c6-7, 183c6-d5).

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