being a manager or a leader .. how easy is it ?!!

>Five cannibals (Man eaters) get appointed as programmers in an
>IT company.
>
>During the welcoming ceremony the boss says:
>
>"You're all part of our team now. You can earn good money here,
>and you can go to the company canteen for something to eat.
>So don't trouble the other employees."
>
>The cannibals promised not to trouble the other employees.
>
>Four weeks later the boss returns and says:
>"You're all working very hard,
>and I'm very satisfied with all of you.
>One of our cleaners has disappeared however.
>
>Do any of you know what happened to her?"
>
>The cannibals disowned all knowledge of the missing cleaner.
>
>After the boss had left, the leader of the cannibals says to the
>others,
>
>"Which of you idiots ate the cleaner?"
>
>One of the cannibals raises his hand hesitantly,
>to which the leader of the cannibals says:
>
>"You FOOL! For four weeks we've been eating team leaders,
>managers, and project managers and no one has noticed
>anything, and YOU ate one cleaner and it got noticed.
>
>So hereafter please don't eat a person who is working."
>