The following is a guest post by Maggie Kast, author of A Free, Unsullied Land. If you would like to write a guest post on my blog, please send me an e-mail at contact@cecilesune.com. I enter Chicago’s Museum of Contemporary Art and am surprised by the beat of tapping feet four floors above, as dancers from the Chicago Human Rhythm Project perform on a stage built from discarded public school desks and…