 Foot compares injustice with physical injury, focusing primarily on an injury to our limbs. She believes that an injury, which impairs the functioning of some part of our bodies or creates lasting pain, is something we each have reason to avoid. That is, we want to avoid it for itself, even though some circumstance may arise where there is a reason to want to sustain an injury because of some advantage which can be realized through it (or, more commonly, we want to do something that risks sustaining injury for the sake of some advantage). In such circumstances, we can say that there are overriding or all things considered reasons to sustain or risk an injury, but clearly, we would avoid the injury if the gain could be realized without sustaining it. No rational person seeks an injury for itself, and every rational person avoids injury for itself. An injury is something that we should always want to avoid because it is a physical change which impairs the function of a particular body part, and we all have reason to want our bodies to function properly (1959 [VV 116–117; 122]). General facts concerning human beings support the idea that it is necessary for rational people to want their limbs intact.