Well-being

• 1. Introduction

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  Well-being is what is ultimately good for a person. That sentence sounds simple enough, yet philosophers, psychologists, economists, and religious thinkers have disagreed about its meaning for millennia. The word itself entered the English language in the 16th century, borrowed from the Italian term benessere. And the question it points toward is one every person encounters: what does it actually mean for a life to go well?

  The philosophical study of well-being dates back to antiquity, but research in the empirical sciences has only intensified since the second half of the 20th century. Today the subject reaches across disciplines from medicine and law to anthropology and neuroscience. It drives national policy, shapes how governments measure success, and informs how doctors treat patients with incurable illnesses.

  What makes this subject rich and surprising is how contested it remains. Is pleasure the only real measure? Does getting what you want actually make you better off? Can an outside observer even assess someone's well-being at all? And how does the story change when we move from individuals to communities, from humans to animals, from ancient Athens to contemporary policy chambers? Those questions are exactly what this documentary will explore.

• 2. Measuring the Unmeasurable

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  Subjective well-being is the measure of how people feel about and evaluate their lives, and it encompasses both affective and cognitive components. On the affective side, a person is doing well when they have many pleasant experiences and few unpleasant ones. On the cognitive side, high well-being means evaluating one's life positively across time, not just in a given moment.

  Researchers measure subjective well-being using questionnaires. Single-item measures ask something like: rate how content you are with your life on a scale from 1 to 10. Multi-item scales go further, separating questions about positive affect, the absence of negative affect, and overall life satisfaction, then combining them into a comprehensive index. The multi-item approach has one key advantage: it reduces the distortion that the phrasing of any single question can introduce.

  Objective well-being takes a different approach entirely. Rather than asking people how they feel, it relies on factors that can be assessed and quantified from an external perspective: health, level of education, income, housing, amount of leisure, and security. Because these measures draw on external data, they are less affected by cultural and personal biases that can skew self-reports.

  The two approaches often align but not always. A person scoring low on objective measures, such as low income and frail health, may nonetheless report being subjectively happy. That gap raises a foundational question: whether objective factors are themselves forms of well-being or whether they merely influence and indicate a state that is, at its core, a matter of personal experience. That debate has never been fully resolved, and it continues to shape how researchers design studies and how policymakers choose which numbers to trust.

• 3. Pleasure, Desire, and Lists

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  Robert Nozick (1938-2002) proposed one of the most discussed thought experiments in the field: an experience machine that simulates a life filled with pleasures, which from the perspective of hedonism would represent an ideal existence. The problem, Nozick argued, is that life in that virtual simulation lacks authenticity. Mere pleasure by itself is not the only source of value.

  Nozick's challenge is aimed squarely at hedonism, the view that well-being depends entirely on the balance of pleasure over pain. Hedonists generally define pleasure and pain broadly, not just as bodily sensations but as any experience that feels good or bad. So the intellectual pleasure of reading an engaging book and the sorrow of losing a loved one both count. According to quantitative hedonism, only the intensity and duration of those experiences matter. Qualitative hedonism adds a further claim: some pleasures are intrinsically superior to others in their character, even when intensity and duration are equal.

  Desire theories offer a different starting point. Well-being, on this view, comes from getting what you want. Desires are subjective attitudes directed at things or states, like the desire to eat potato chips or become famous, and they are either fulfilled or frustrated depending on whether the desired state of affairs actually comes about. Because desires vary so widely from person to person, the concrete path to well-being varies too. Some people prioritize family and health; others seek career success, wealth, knowledge, or spiritual enlightenment.

  Critics of desire theories point out that people sometimes desire things that are bad for them. A child's desire to eat nothing but candy could lead to serious health problems. In response, modified versions of the theory restrict their claim: only the satisfaction of well-informed desires contributes to well-being, excluding desires where individuals do not fully consider the negative consequences.

  Objective list theories take yet another path. They argue that well-being depends on a combination of diverse factors, which researchers have proposed to include health, friendship, achievement, knowledge, and autonomy. Some versions hold that each item on the list is valuable by itself; others argue they only promote well-being when combined. Derek Parfit (1942-2017) introduced the influential philosophical distinction between hedonism, desire theories, and objective list theories, a classification that remains the standard starting point for academic discussion today.

• 4. What Actually Contributes

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  Positive emotions are closely tied to the brain's reward system, influencing motivation and behavior by reinforcing beneficial actions and discouraging harmful ones. High well-being is associated with frequent positive emotions and infrequent negative ones. Despite their unpleasantness, negative emotions are nonetheless integral to healthy functioning: fear, for example, evaluates a situation as dangerous and is associated with a behavioral disposition to flee.

  Life satisfaction operates differently from momentary feeling. It is a comprehensive, long-term assessment of one's life as a whole. A person may be overall satisfied with their life even if they are experiencing intense stomach pain at the moment. Individuals vary in how they arrive at that judgment: some rely on gut feelings, others on deliberate reflection. And sometimes people make inaccurate assessments, deceiving themselves about their true quality of life, in what researchers describe as cases of false happiness.

  Achievements also contribute, and their value depends not only on quantity but on significance. A difficult achievement that helps many people, like finding a cure for cancer, may contribute more to the achiever's well-being than a trivial and pointless achievement, like determining the exact number of crumbs in a cookie jar. In some cases, high achievement has negative side effects, such as when an obsession with success increases anxiety and alienates loved ones.

  Friendship is a voluntary social relationship between people characterized by mutual concern, trust, and support. Its strength is determined by factors such as time spent together, trust, emotional intensity, and readiness to support each other in difficult times. Having many friends is usually beneficial, but if a person already has numerous friends, making even more may not significantly impact their well-being.

  Health does not fully determine happiness. Some individuals affected by severe illnesses and disabilities report high levels of subjective well-being. Some studies suggest that genetic influences can explain up to one third of the differences in subjective well-being: the life satisfaction of identical twins, who share genes, is more alike than the life satisfaction of non-identical twins. Neurotransmitters and hormones, including endorphin, dopamine, serotonin, oxytocin, and cortisol, are also relevant biological factors.

  Well-being tends to decline from childhood until around age 40 globally. There are region-specific differences for the second part of life: some regions see a further decline towards old age, while levels remain stable in others and increase in some. There is little gender difference in well-being in most countries.

• 5. Models and Their Makers

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  Ed Diener (1946-2021) developed the tripartite model of subjective well-being, identifying three essential components: the presence of positive affect, the absence of negative affect, and a positive evaluation of one's life as a whole. Carol Ryff (born 1950) proposed a six-factor model of psychological well-being, naming self-acceptance, personal growth, purpose in life, environmental mastery, autonomy, and positive relations with others as the main elements.

  Sociologist Corey Keyes took a different angle, focusing on social well-being through a five-component model built on social integration, social contribution, social coherence, social actualization, and social acceptance. Martin Seligman (born 1942), one of the founders of positive psychology, proposed the PERMA theory: positive emotions, engagement by following one's interests, interpersonal relationships, finding meaning in life, and accomplishments in the pursuit of success and mastery.

  Psychologist Michael Bishop developed the network model, which emphasizes that the components of well-being, including feelings, emotions, attitudes, traits, and interactions with one's environment, form a causal network, influencing and reinforcing each other in complex ways rather than simply adding up.

  Positive psychology as a formal field emerged in the late 1990s, positioning itself in contrast to the traditional emphasis of psychological research on illness and dysfunction. One of its running concerns is the set-point theory: the hypothesis that each person has a stable level of subjective well-being that is mostly fixed by hereditary factors or factors determined early in life, implying that any change is only temporary and will eventually revert to the individual's baseline. If the set-point theory holds, the entire project of designing interventions to reliably increase well-being faces a fundamental challenge, and that tension continues to drive research.

• 6. From Philosophy to Policy

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  Jeremy Bentham (1748-1832) proposed the felicific calculus as a method to measure, compare, and aggregate degrees of pleasure and pain, considering factors such as their intensity and duration. He also argued that individuals and governments should promote "the greatest happiness of the greatest number". His student John Stuart Mill (1806-1873) modified that idea, holding that higher pleasures of the mind are more valuable than lower pleasures of the body, even when intensity and duration are the same.

  Richard Easterlin (1926-2024) formulated the Easterlin paradox: within a given country, people with higher incomes tend to be happier than those with lower incomes, yet overall happiness does not trend upward as the average income of everyone increases. That finding challenged the assumption that economic growth automatically translates into greater national well-being.

  The challenge to gross domestic product as the main indicator of national success has since moved beyond academic economics. Indices to track, compare, and promote population well-being have been established at both national and international levels, including the World Happiness Report, the OECD Better Life Index, Bhutan's Gross National Happiness, and the UK Measures of National Well-being. Policymakers now use tools like the WELLBY scale to quantify how policy decisions influence the well-being of large populations.

  The story of how well-being entered law and medicine follows a similar arc. Medical interventions typically aim to restore, secure, and enhance patient well-being. Considerations of well-being also shape the treatment of incurable diseases like Parkinson's disease, where therapies aim to minimize negative effects and help patients lead productive and fulfilling lives despite their illness. The commitment to patient autonomy, however, is another core principle of medicine, and the two can conflict when patients reject treatments that would improve their well-being, acting against their own self-interest. Welfare economics, for its part, uses metrics such as distribution of income, gross domestic product, consumer surplus, and compensating variation to evaluate competing policy proposals, a tradition that traces a direct line back to Bentham's felicific calculus.

• 7. Ancient Roots, Global Reach

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  Socrates (c. 470 BCE) rejected power, fame, wealth, and the hedonistic pursuit of pleasure as paths to lasting happiness, arguing instead that wisdom and virtue are key elements of well-being. He held that lifelong learning and philosophical reflection cultivate an examined life and align with the good. Aristotle (384-322 BCE), influenced by Socrates, developed a eudaimonic theory and maintained that well-being is the purpose of life, achieved primarily by practicing virtues such as acting in accordance with reason, justice, courage, and temperance.

  In ancient India, teachings about well-being appeared in the Vedas, Upanishads, and the Smriti literature, formulated in the first two millennia BCE. They include the ideas that a person should fulfill their duty relative to their social role and stage of life, and that one should attain knowledge about how the self and the world are ultimately one. The Buddha, who lived roughly in the 6th century BCE, identified craving as the root cause of suffering and proposed practical recommendations such as right conduct and mindfulness to overcome it.

  In ancient China, Confucius (6th to 5th century BCE) emphasized social virtues and benevolence. Laozi (6th century BCE) in the Taoist tradition saw living in harmony with the natural order through effortless, spontaneous action as the ideal form of life. During the medieval period in the West, Augustine (354-430 CE) argued that true happiness is achievable only in the afterlife, and Thomas Aquinas (1225-1274 CE) proposed that a beatific vision of God is the highest form of well-being.

  The Age of Enlightenment, particularly from the late 17th century onward, shifted the focus from religious theories to naturalistic explanations. Voltaire (1694-1778), Jean-Jacques Rousseau (1712-1778), Denis Diderot (1713-1784), Adam Smith (1723-1790), and Francois-Jean de Chastellux (1734-1788) all rejected the otherworldly focus, emphasizing instead the pursuit of earthly happiness through reason, empirical inquiry, and social progress. That shift set the stage for the empirical science of well-being that would grow dramatically in the second half of the 20th century, and for the policy applications that now touch governance on every continent.