Every king needs a fool to mock him. Every trial needs a devil's advocate. The contrary point of view must not be silenced, because by that process we utterly lose our perspective. Anywhere an assertion is made - science, politics, religion, film-making, book editing - there should be someone whose job it is to be the "no" man.
Mokalus of Borg
PS - Plus I think it would be cool to see court jesters following CEOs around.
PPS - Who wouldn't like to see that?