LOL! Perfect drawing together of so many classic themes: Dilbert's complex jargony deep depressing analysis of the real value of his existence; PHB does nothing to deny it and even acknowledges his own parasitic worthlessness. But also the subtle play on the typical appraisal meeting where the PHB has nothing useful to add, but just has to put in his own petty little alteration purely to justify his role in the pointless procedure. All done with classic comedy timing as the direction of play changes in an instant :-)