FEO demands that those with the same native talent and the same ambition to exercise that talent toward competitive success should have equal competitive prospects. The further assertion that the natural lottery of talent potential is also morally arbitrary yields the idea that those with the same ambition should have equal prospects. This idea needs interpretation. It can hardly be a plausible principle of justice that demands that social arrangements should bring it about that slow runners have just the same chances of winning foot races as fast runners with the same desire to win, or that the medically incompetent and competent should have the same chances of becoming medical doctors and having successful careers in that profession, and so on. The sensible thought here is that the benefits that economic and social cooperation yield should go in equal amounts to equally responsible and ambitious individuals regardless of the social contingencies and natural chance factors that enable some to succeed more than others in competitive social life. This is roughly the luck egalitarian or level playing field conception of equality of opportunity, now proposed as the distributive justice standard for assessing institutions and practices.