How do you celebrate a half-century of poetry workshops? If the Community of Writers, well, you publish an anthology. “Why to These Rocks” came out mid-month, like everything with the granddaddy of writing conferences on the West Coast a labor of love working with terrific talent. I bought one, and they sent me one after I let slip I might take it up in a column even though poetry intimidates me. Inklings of understanding light up with a phrase here, a line there. Mostly, though, I find awesome spatters of words, all the colors and all the senses, folded and tucked just so, an origami made of air, invisible. OK, I think — thinking invariably is my Achilles — why does this feel like a Rorschach?