A free transaction between parties is a horribly abstract term. I mean a gunman robbing you on a side of the road is a free transaction between two free partie

A free transaction between parties is a horribly abstract term. I mean a gunman robbing you on a side of the road is a free transaction between two free parties. Gunman is free to shoot you, and you are free to run away or take the bullet. Free transaction between peers is what is actually useful considering.