See
Voting/Experience System, XP are given when you vote (as well as when you use up all your votes at lower levels). So I guess these monks have been to modest to raise their voice, but yet assertive enough to indicate their approval or disapproval of some nodes.
Debugging is twice as hard as writing the code in the first place. Therefore, if you write the code as cleverly as possible, you are, by definition, not smart enough to debug it. -- Brian W. Kernighan