There is a duelism between neighbours, that is reminiscent of a sort of feud.  Duelism does nothing to promote The Cause, because the Cause goes on, with or without the friction of the battle caused by duelism wanting to win.

This duel in itself merely imbalances nature in real time and does nothing for the Dark Light ideals.

For the Dark Light to be promoted in a proper manner, the duelist aspect needs to be removed and given a more broad spectrum, so that the friction caused by duelism can be soaked up and dispelled, therefore revealing the truth.