 that you don't greet them warmly or you outright ignore them. A greeting is an important thing. You know, it's funny. This isn't a coworker example, but it's one that we mostly have had, that you've gone in to deal with some sort of level of customer service someplace or in a checkout line, and the person just doesn't even acknowledge your existence. Like you walk in, there's nobody there. It actually says customer service above them.