In Thomas Zummer’s partial retrospective of works I should have done, on view at PNCA’s Philip Feldman Gallery, things are not what they seem. For starters, the show is more replete than it sounds. The Brooklyn-based writer, artist, teacher, and curator presents an assortment of drawings, prints, and sculptures spanning his career. The pieces are a motley crew: portraits of robots butt against blurred, interstitial[…..]