I think Michael Vassar nailed it at the end of his post. We seem to live in a transactional world (not just in matters of commerce) where one party being completely transparent to another constitutes unilateral disarmament in a variety of social settings. Also, the existence of 3rd and 4th party observers means there are performance incentives for the two parties in interaction separate from their transactional incentives.
I think Michael Vassar nailed it at the end of his post. We seem to live in a transactional world (not just in matters of commerce) where one party being completely transparent to another constitutes unilateral disarmament in a variety of social settings. Also, the existence of 3rd and 4th party observers means there are performance incentives for the two parties in interaction separate from their transactional incentives.