I walked into artist Lori Nix’s new show “The City,” expecting to take a lighthearted romp through a post-apocalyptic digital landscape, but what I received was a lesson on making assumptions. If a virgin viewer of Nix’s work saw her show without knowing her methods, they could easily assume that her images of a crumbing and abandoned New York City were created through digital photo-manipulation. But they would be wrong. Nix captures these fantasy moments by handcrafting dioramas that are so staggeringly perfect in their detail that they can easily pass for the real world. She then spends weeks slowly capturing these sculptures on film. It’s such an impressive illusion; you must see it to believe it.