“…Paul Sheehy provides an example of the latter: four prisoners escaping in a rowing boat. 2 Collectivities can be small or large, voluntary or involuntary, passive or active, or can overlap categories. Fathers for Justice is a small, voluntary, active subset of the large, partially involuntary collectivity of divorced fathers unhappy with their legal access entitlements, mutually dependent in the sense that the goal (legal change) is one that, if achieved for any, must be achieved for all.…”