Form is a word used to explain the cause of poetry. This use creates lots of confusion. Wittgenstein can help here. Following W, we can say that form does not explain the cause-and-effect logic of understanding, but form, as it emerges from our reading of the poem, is the reason —- the cause —- the why we search for the cause of the poem. Once we turn this around, we can accept the futility of explanation. There are as many causes as there are ways of proceeding to write a given poem. Our concern is with the emergence of form in our experience of the poem. How it happens to us.