boss: why didn't you upgrade the servers like i asked?
dilbert: you never asked me to do that.
boss: yes, i did. i told you in an email.
dilbert: no, you did not.
boss: i know i saw it because you replied.
dilbert: i replied to a different email.
boss: okay, let me find the email and show you how wrong you are. see. it clearly says, "give me a project update by thursday."
dilbert: which is...an entirely different topic.
boss: why are you fighting me on this?