Philosophy
The Capability Approach and Social Justice Beyond Resource Distribution
Quick fact
The capability approach inspired the Human Development Index (HDI), which ranks countries not by GDP alone but by life expectancy, education, and income. For example, a country like Sri Lanka ranks higher on HDI than its GDP might predict, because it converts resources into longer, more educated lives.
Why this is interesting
Why can giving everyone the same amount of money still be deeply unjust? Sometimes it's not how much you have, but what you can actually do with it.
Read the full explanation
Understanding The Capability Approach and Social Justice Beyond Resource Distribution
Imagine two people: one is healthy, the other has a severe disability. Give them the same wheelchair. For the healthy person, it's useless; for the disabled person, it's life-changing. Resource-based theories of justice focus only on the wheelchair (the resource). The capability approach asks: what can each person actually do and be with that resource? This shift—from what people have to what people can do—is the heart of the capability approach. The approach begins with the idea that well-being is about 'functionings'—the various states of being and doing that a person values, such as being healthy, being educated, or participating in political life. The 'capability' is the real freedom to choose among these functionings. So, having access to a wheelchair expands the disabled person's capability to move, but not the healthy person's capability (she could already run). Thus, justice requires not just equal resources, but expanding everyone's capabilities to a sufficient level.
A deeper explanation
The capability approach was developed by economist-philosopher Amartya Sen, primarily as a critique of utilitarian and Rawlsian theories of justice. Utilitarianism focuses on maximizing happiness, but ignores how resources are distributed and how individuals differ. Rawls focuses on primary goods (rights, liberties, income) but assumes everyone can convert them into well-being equally. Sen argued that people differ in their ability to convert resources into achievements—these are called 'conversion factors' (personal, social, and environmental). For example, a person with a chronic illness may need more resources to achieve the same health as a healthy person. Thus, justice should be evaluated in the space of capabilities: the substantive freedoms people have to lead the lives they have reason to value. This shifts policy from merely providing goods to enabling people to use them effectively. Martha Nussbaum extended Sen's work by proposing a list of ten basic capabilities (such as life, bodily health, and political participation) that should be guaranteed as a minimum threshold for a just society. Why does this matter? It forces us to look beyond income poverty and consider social exclusion, discrimination, and environmental barriers that restrict people's real freedoms. The capability approach underpins the human development paradigm and informs policies from education to health. It is not opposed to resource distribution, but argues that distribution is only a means; the end is expanding people's lives.