In the view of Gough and Doyal, every person has an objective interest in avoiding serious harm that prevents that person from endeavoring to attain his vision of what is good, regardless of what exactly that may be. That endeavour requires a capacity to "participate" in the societal setting in which the individual lives. More specifically, every person needs to possess both physical health and personal autonomy. The latter involves the capacity to make informed choices about what should be done and how to implement it. This requires mental health, cognitive skills, and opportunities to participate in society's activities and collective decision-making.