The role of a common man when he acts as one of countless arbiters to a dispute.
A common arbiter has a preferred method to resolve resource disputes.
A common arbiter may use these ways of manifesting his preferred resolution method - Fight - Offer resources - Call for others to fight or offer resources
He may pledge some, all, or none if his efforts to manifest a given dispute.
His efforts may be fully, partly, or not at all successful.
Common arbiters tend to create institutions to increase the effect of their efforts.