Socrates is still developing the notion of two different kinds of agent, one making a thing appear, and another making a thing be. He has moved from the examples of disease in the body and whiteness in hair to ignorance in - we may assume, since he doesn't say yet - the soul. We learn (please don't!) that a totally expert and a totally inexpert person would both not philosophize. Only the neither expert nor inexpert would philosophize. By analogy with the neutral body loving the physician in order to remove the disease, we might suppose that the neutral soul would love the expert in order to remove ignorance, but not in order to acquire expertise. We need not take the argument literally, but in order to understand the fallacious nature of the argument, we must start by taking the argument at face value.
