So instead of selling gold for dollars and then dollars for petroleum, they'll sell gold for petroleum. They won't have any more dollars than before. And they

So instead of selling gold for dollars and then dollars for petroleum, they'll sell gold for petroleum. They won't have any more dollars than before. And they'll need to ship gold to countries that don't actually really want to, just for them to sell it for dollars. Still no free lunch. Still seems inefficient.