The path of the norm is the path of least resistance; it is the route we take when we're on auto-pilot and don't even realize we're following a course of action that we haven't consciously chosen. Most people who eat meat have no idea that they're behaving in accordance with the tenets of a system that has defined many of their values, preferences, and behaviors. What they call 'free choice' is, in fact, the result of a narrowly obstructed set of options that have been chosen for them. They don't realize, for instance, that they have been taught to value human life so far above certain forms of nonhuman life that it seems appropriate for their taste preferences to supersede other species' preference for survival.