Socrates’s point is that someone is a reflection of their training—someone who’s studied medicine is a doctor, etc. If it’s true that one becomes what they’ve studied, and Gorgias maintains that learning what’s just and unjust is key to becoming an orator, then how can an orator
not be a just person? How is it possible to be an unjust orator, like the example Gorgias gave (which suggested that someone who’s trained in oratory might very well behave unjustly)? With these questions, Socrates suggests that there’s a flaw built into Gorgias’s claim that oratory is concerned with what’s just and unjust, but that oratory also doesn’t require expertise in these matters. How can both be true?