
Cobbing again: "Leonardo da Vinci asked the poet to give him something he might see and touch and not just something he could hear. Sound poetry seems a to me to be achieving this aim."* Same problem here, I'd suggest. See and even hear we can do, with work. But touch? That's difficult. (And although seeing a printed poem - really seeing it as a thing, in William Carlos Williams's sense ("Poems aren't beautiful statements. They're things!") - is something we think we do in a close reading when often it is not what we're really doing.)
All this strikes me as relatively easy to talk about - I mean presenting the problem does not require hard work at the writing of it - but really doing it seems quite daunting.
* www.ubu.com/papers/cobbing.html