The actor is at his best, most alive and inventive here. But The Thing With Feathers doesn’t know what kind of movie to be. Photo: Sundance Institute Not everything has to be a horror movie. Not everything needs to open with jump scares and random inserts of loud incoherent chaos. Yes, if you pretend your film belongs in the horror genre nowadays, you can scare up some good publicity and maybe a wide release, maybe even a plum distribution deal with an A24 or a NEON or a Blumhouse. But what if