Amartya Sen's Capability Approach Explained | Wellbeing and Freedom

Welfare (well-being) and economic growth are fundamental concepts in economics. Welfare motivates economic actions, and how welfare is achieved can either promote or hinder growth. There are two types: one-off welfare (resources consumed without creating additional welfare) and sustainable welfare (mechanisms incentivizing continuous creation). Marginal utility is the additional satisfaction from consuming one more unit, with higher marginal utility for poorer individuals. Utilitarianism advocates maximizing total well-being across all individuals, suggesting resources should be distributed to maximize overall utility. Utility can be measured cardinally (assigning numerical values) or ordinally (ranking preferences). Modern economics primarily uses ordinal utility because cardinal utility requires unrealistic assumptions about comparing satisfaction across individuals. Utilitarianism faces criticisms including philosophical problems about comparing utility across individuals, difficulty generalizing from specific cases, and historical gender bias.

Welfare economics is the systematic study of normative policy recommendations in economics, evolving from classical political economy through Jevons' utilitarianism to modern ordinal approaches; it defines economic welfare as satisfaction or utility measurable in monetary terms, with national income serving as a key objective measure, while modern welfare economics has shifted from cardinal utility functions to ordinal preference orderings, focusing on efficiency in production and exchange and distribution of welfare among individuals.

Utilitarianism of preferences is an approach that attempts to construct a welfare economics consistent with the engineering culture. This approach accepts that economics is the science of means and ends (as defined by Robbins) but constructs a welfare theory that makes the engineering culture a point of arrival. The speaker notes that this approach involves complex theoretical constructions that ultimately reduce to a simple insight: efficiency can be chosen because individuals reason in terms of efficiency, and the economist merely reflects what is already present in society. However, this approach faces a fundamental problem: individual preferences are subjective, while utility must be intersubjective for collective welfare calculations. The democracy welfare economics approach, associated with Rawls and Nussbaum, constructs a welfare economics that explicitly addresses the values of a democratic society. Rawls, despite his official position, builds a welfare economics that starts from democracy and analyzes it to arrive at fundamental values. This approach provides a framework that can be used in reverse - starting from different values to arrive at different democratic arrangements. The functionings approach, developed by Sen and others, provides a framework for aggregating individual wellbeing into collective wellbeing and for identifying situations where intervention can improve welfare. This approach studies the compromises between values and provides a rich analysis of how different value combinations can lead to different possible civilizations.

Utilitarianism is a consequentialist moral philosophy that evaluates actions based on their outcomes rather than intentions. Jeremy Bentham introduced this framework, which assesses whether actions create positive or negative impacts and influence large or small numbers of people. Utility represents the want-satisfying capacity of commodities and services, measured either cardinally (in utils) or ordinally (through ranking). In welfare economics, increasing utility directly correlates with increasing welfare—both for individuals and society. This foundation enables systematic evaluation of actions and policies through their effects on human well-being.

This section establishes the philosophical foundation that happiness is the only thing with ultimate intrinsic value, while everything else has only instrumental value. The hedonistic definition defines happiness as subjective well-being - the net balance between positive and negative feelings. This differs from common misunderstandings equating hedonism with selfish pleasure-seeking. The framework explains why altruistic acts causing personal suffering are morally justified (they increase overall happiness) and why evolutionarily-driven preferences (like reproduction) should still be evaluated by whether they maximize net welfare. Historical examples like China's ancient chastity laws demonstrate how moral beliefs can be wrong without being obviously so, and how utilitarian reasoning can identify such errors. The speaker traces his journey from communist revolutionary to economist, showing how exposure to different experiences can transform ideological views.

John Rawls revived political philosophy in the 20th century with his 1971 Theory of Justice. His central innovation is the 'veil of ignorance' thought experiment: imagine choosing principles of justice from behind a veil where you don't know your class, race, religion, gender, talents, or personal characteristics. From this position of impartiality, all rational people would agree on two principles: first, equal liberties for everyone; second, social and economic inequalities should benefit the worst-off members of society (the difference principle), and positions should be open to all under conditions of fair equality of opportunity. Rawls uses 'primary social goods' as the metric for justice—things any rational person would want regardless of their conception of the good life. Amartya Sen's powerful criticism is that this is fetishistic: it focuses on resources rather than what people can actually do and be with those resources. For example, equal resources to a legless person and someone with functioning legs don't achieve real equality since the legless person must spend income on mobility devices. Sen argues we should focus on 'capabilities'—what people are enabled to do and be, considering their personal traits and circumstances.

This section presents Amartya Sen's fundamental critique of John Rawls' theory of justice. Sen argues that Rawls' focus on equal distribution of primary goods fails to account for the crucial step of converting resources into actual capabilities and freedoms. He proposes that justice should be based on basic capabilities rather than resources, identifying arbitrary factors like the 'lottery of birth' that create inequality. Sen also critiques Rawls' original position and veil of ignorance as impractical for real-world application, proposing instead that we should work with social sciences to apply justice theory progressively.

Justice is an ancient concept central to political philosophy. In modern liberal perspective, liberty is the chief concern, requiring integration of equality and fraternity. John Rawls (1921-2002) published 'A Theory of Justice' in 1971, stating 'justice is the first virtue of society.' His theory concerns the distribution of primary goods: rights, liberties, powers, opportunities, income, wealth, and self-respect. Rawls termed his theory 'pure procedural justice' regarding fair distribution standards. He criticized utilitarianism's 'greatest happiness of the greatest number' principle, arguing it can sacrifice minorities for majority benefit. Minority suffering cannot be compensated by majority happiness. Rawls sought a theory maximizing benefits for society's weakest members.

John Rawls' Theory of Justice (1971) proposes that justice is the first virtue of a good society, with primary goods (rights, duties, powers, opportunities, income, wealth, and self-respect) distributed through two principles: the Equal Liberty Principle (guaranteeing equal basic liberties) and the Difference Principle (allowing social and economic inequalities only if they benefit the least advantaged). Rawls derives these principles using the Original Position and Veil of Ignorance thought experiment, where rational individuals choose principles without knowing their social position. Robert Nozick critiques this in his Entitlement Theory (1974), arguing that taxation for welfare violates property rights and that individuals should retain control over their legitimately acquired resources. Communitarians and feminists further critique Rawls for ignoring the importance of community, cultural context, and gender-specific challenges in achieving true justice.

Freedom can be understood in two fundamentally different ways: positive freedom and negative freedom. Negative freedom refers to the absence of external obstacles, barriers, or constraints that prevent someone from acting—for example, legal restrictions like age or gender requirements that forcibly prevent someone from playing in the NBA regardless of their abilities. Positive freedom, in contrast, refers to the presence of power, ability, or resources that enable someone to act—for example, lacking the talent or physical capability to play basketball. This distinction applies to almost every kind of freedom, including freedom to buy a car, freedom of speech, freedom to vote, and freedom to marry. People often value different aspects of freedom: some prioritize freedom as the absence of external control, while others prioritize freedom as the presence of internal power and capability.

Isaiah Berlin distinguished between negative freedom (absence of external obstacles, restrictions, and coercion) and positive freedom (capacity to control one's life and achieve one's goals). Using the Billy Bones example: Billy is negatively free (no external obstacles prevent drinking) but not positively free (addiction prevents self-control). Jim Hawkins is negatively unfree (locked away) but positively free (no internal compulsions). The key distinction is that negative freedom concerns external limitations while positive freedom concerns internal limitations like addiction or irrationality.

Freedom has two sides: negative freedom (absence of obstacles) and positive freedom (presence of enabling conditions). Using vacation as an example: open borders represent negative freedom, but lacking money means no positive freedom. Limiting negative freedom can increase positive freedom (e.g., prohibiting murder secures life). However, formal freedom without resources is insufficient (freed slaves had no home, money, or education). The glass ceiling concept shows theoretical freedom blocked by invisible barriers. Isaiah Berlin warned against abandoning negative freedom for positive freedom, as building the latter requires dangerous state intervention. Capitalism realizes negative freedom; socialism is based on positive freedom.

Ethics education distinguishes between negative and positive freedom. Negative freedom is the absence of inner or outer restrictions - the ability to think and act without being influenced by others, institutions, or ideologies. Positive freedom is the ability to decide for something or choose from various options. Negative freedom is presented as a prerequisite for positive freedom. The distinction is introduced as a fundamental concept in political philosophy with roots in Kant. Negative freedom is the freedom from inner or outer restrictions. Such restrictions can be exercised by other people, institutions, or ideologies. This type of freedom is experienced when, for example, school is cancelled or parents are not home. It is also experienced when one can think freely without one's thoughts being influenced by others. Negative freedom is also called freedom from something and is a prerequisite for positive freedom.

Philosophers distinguish between two types of freedom: negative freedom (freedom from) and positive freedom (freedom to). Negative freedom refers to being free from external constraints or interference, such as not being forced to drink alcohol. Positive freedom refers to having the ability or opportunity to do something, such as choosing not to wear pants because one forgot them. This distinction is fundamental to understanding philosophical discussions about liberty.