What if we lived in a warrior type society where one man could take any mans belongings if he could beat him a cage match?
Your vintage Rolex that your dying grandpa left you
Any man could take it from you. All he has to do is walk up and challenge you to a cage match. You have 30 days to prepare, but realistically, because of the warrior society, you should be in top physical shape at all times. If you choose not to fight, the man takes your challenge item by default. But if you win, you win all that mans belongings. Meaning that, there is more in it for the DEFENDER than the CHALLENGER. Because the challenger can only win, say, your wife. But you as the defender, if you beat him, you win everything of his.