As a simple and obviously rather obscure example to think about zero-sum blame, consider two men sitting in a room facing opposite walls. In front of each of t

As a simple and obviously rather obscure example to think about zero-sum blame, consider two men sitting in a room facing opposite walls. In front of each of them are identical control panels; in order to launch the nuke they both need to issue identical commands at the same time. Both should be considered fully responsible for anything that happens. I would would not consider "Well he turned his key too!" to reduce blame in any way, they would both be to blame just as much as if the system only required one operator. Wether this principle of non-zero-sum blame can be applied to situations less obviously engineered is something I can't really support, but it is a point of view that I hold.