I'm beginning to think that Black Mirror fans are one of those audiences that are impossible to entirely please (similar to Star Wars or Star Trek fans). Some of the "criticisms" I'm reading are people that don't seem to understand what creative license is, and are nitpicking the episode for not being 100% realistic. This is far and away one of the best episodes of the entire series. The story is perfectly paced and consistently engaging. The characters are all well-acted and compelling. The technical aspects of the episode are perfect; terrific visual style, direction, set design, etc. Jesse Plemmons delivers an absolutely golden performance making this an unforgettable episode. There is little not to like here.