So if you are a knowledgeable consumer, you can buy teachings safely from Protagoras or anyone else. But if you’re not, please don’t risk what is most dear to you on a roll of the dice, for there 314 is a far greater risk in buying teachings than in buying food. When you buy food and drink from the merchant you can take each item back home from the store in its own container and before you ingest it into your body you can lay it all out and call in an expert for consultation as to what should be eaten or drunk and what not, and how much and when. So b there’s not much risk in your purchase. But you cannot carry teachings away in a separate container. You put down your money and take the teaching away in your soul by having learned it, and off you go, either helped or injured.