Bonnie,

As I said before, it won't actually do any good to know WHY the rules can only be changed every six years. And it is possible, given the way by-laws are written and passed by committee, that no one knows or remembers why it was set this way. All outrage aside, even if the leadership were to come out and say "it's so you lot of stinking plebs can't mess about with the rules very often," there wouldn't be much you could do about it--except change it next time the six year window opens. So I suggest people who don't like the rule put their energy into changing it, not finding out why it is as it is.