  Next the Stranger talks about examples, such as weaving, for which there are perceptible likenesses, easy to understand, which an instructor can point to when an inquirer has trouble grasping a verbal account. But there are other things, described as greatest and most valuable, that cannot be observed or imaged. It is for the sake of those harder topics that the inquirers practice giving and receiving an account on simple examples, such as weaving, where they can fall back on perceptible instances. The Stranger says: