Inspectors recognize the head region of a model predator placed in their river as most dangerous.
There were fewer inspections of the predator's head than of its trunk and tail. Inspector group was smallest when inspecting the head region of a predator. Inspectors stayed the furthest away when they were inspecting the predator's head.

If fish do engage in group inspection (cooperate-cooperate) despite the risks, R should be greater than P.