The Authenticity-Obsessive Folks at “Mad Men” Meet the Even More Authenticity-Obsessed Folks Online

“Mad Men” producer Matthew Weiner is famously obsessive about the authenticity of the period detail on the show, even making sure that a child did not play with an Etch-a-Sketch in an episode set in 1960 because it was not introduced until later that year.  But that is just an engraved invitation for online commenters who have come up with a list of “Mad Men” anachronisms collected by New York Magazine’s Vulture blog, from a crash cymbal to a nighttime football game with slo-mo.