There are limits to how far artists can push works of art, but few test them as forcefully as Sadie Benning. Benning’s installation on view now at the University of Chicago’s Renaissance Society attempts to give viewers a Shared Eye on US politics and history, conjuring a kind of collective memory through the rhythmic sequencing of panels and our subjective interpretations of their interpolations. That aim might already be a mouthful, but Benning does not stop there. Taking leeway with what she calls the “complexities” of visual media, she wanders far afield into contemporary art’s hottest clichés. Cut up and reassembled from digital snapshots, found photos, trinkets, and painted segments, Benning’s panels collapse and expand media. As physical objects, they are neither here nor there, neither the one nor the other. Unfortunately, the artist takes the same postmodern tack to their subject matter, willing it to hover in the ether and float away at first sight. The operative word here might be “edgy.” Work that cannot be defined as belonging to any one medium is in …