One of my project managers wanted a feature where the user can save over files without having to delete all information of the previous file and that they could go through previous versions. So I told him, "Okay, what you want is a versioning system." Then he proceeded to say no and describe the exact same thing as a versioning system. I wanted to yell at him that that's exactly what he wanted but kept my mouth shut because there is no point in continuing the conversation.