Dilbert sits at his desk and faces Wally who is holding a cup of coffee. Dilbert says to Wally, "It's amazing how much we've changed since prehistoric times." Dilbert continues, "Our ancestors just sat around in caves, grunting and drawing on the wall." Wally comments, "Not very productive." Dilbert draws crude pictures on the blackboard in his cubicle. He tells Wally, "It was just this, all day long." Wally answers, "Mmm. Yup."