That is the oh-so-simple question artist Liliana Porter has tackled in her work for decades. It is also the subject of a new exhibition of Porter’s work at the Mead Art Museum, as well as the focus of a spring 2022 art history course with Assistant Professor Niko Vicario. Through the lens of the Mead show, Vicario’s students explored Porter’s art in physical and virtual settings, wrestling with the difference between the real thing and the depiction of the thing.