Oh yes Mike, I revisit this poem again. Before I forget, here’s my perspective. This whole piece is high in the act of participation for readers.
By participating, we, not only make the performance whole, but make it, one essential sense, uniquely us, using our intellect, imagination, and memory. Hereby, the boundary between readers’ confirmation and the poets’ suggestion becomes closer, or sometimes their thoughts are in much the same way. Then, it turns out to be a beautiful piece indeed!