Dilbert: Did you finish the wireframe I asked you to do last week? Man: I didn't hear from you, so I assumed you didn't need it. Dilbert: Lat week I asked you to do it and you said you would. Man: Right, but then I didn't hear from you again until now. Dilbert: There wasn't any reason to contact you because you said you would do it! Man: How was I supposed to know that? I assumed your silence meant you changed your mind. Dilbert; Can you finish it by next week? Man: Sure, if you don't pester me about it every minute.