  When discussing our duties to one another there is also vigorous debate about what the content and target of our duties should be, along with discussion about what are the best ways to discharge these. Traditional dominant economic approaches to promoting prosperity have focused on raising income levels or increasing Gross Domestic Product (GDP). Railing against such approaches, Amartya Sen suggested that the capabilities approach provides an improved measure of well-being and constitutes a better way to capture changes in people’s condition over time (Sen 1980). Exploring what people are able to do and be provides a more appropriate standard by which to evaluate whether their condition has improved rather than focusing exclusively on their incomes or per capita GDP. Martha Nussbaum develops this approach and argues for a list of ten capabilities that should be secured for all people in all places.  This universal list can provide an important tool in persuading governments to make  reforms conducive to their citizens’ flourishing. (See the entry on  the capability approach  for more.)  What constitutes well-being and the best ways to measure it is an enormous topic both in Philosophy and in  adjacent disciplines. For a good introduction see the entry  well-being.  Another important discourse for discussing these topics is that of human rights which is discussed in Section 2.4 below.