The third tension asks where social things are. Out in the world, independent of what anyone thinks? Or in people's heads, made of meaning?
The answer turns out to be one of the most beautiful findings in the discipline, and it is much stranger than either option.
The idea, in plain words
The two founding answers
The tension runs right back to two of the founders, who represent it almost perfectly.
Émile Durkheim: study social facts as things. Durkheim (4.2) was fighting for sociology's existence as a science, and he made a hard-edged case. Social facts — a suicide rate, a marriage custom, a legal code, a level of religious observance — are external to any individual, general across a population, and coercive: they push back. So they should be studied like natural objects, from the outside, with data. "Treat social facts as things," he wrote. Do not ask people what they think they are doing; measure what they do.
His masterpiece proved the method. Individuals experience suicide as the most private crisis imaginable. Durkheim showed that the rate was patterned, stable, and predictable from the structure of social ties. No individual's account of their own despair could have revealed that.
Max Weber: you must grasp the meaning. Weber (4.3) insisted that human beings are not billiard balls but meaning-makers, and that an explanation which ignores meaning has not explained anything. Two people raise an arm; one is voting, one is hailing a taxi. Physically identical, sociologically unrelated. His term for the necessary operation is verstehen — interpretive understanding.
Weber's masterpiece proved his method: he explained the rise of a whole economic order partly through what worldly work came to mean to a particular kind of Protestant. No amount of external measurement would have found that.
Both were right, and the whole of Part 7 is downstream of this disagreement: positivism (measure it) versus interpretivism (understand it).
How belief hardens: the three-step machine
The most satisfying answer to the puzzle came in 1966, from Peter Berger and Thomas Luckmann in The Social Construction of Reality (5.4). They described the process in three steps, and once you have them you can watch almost any institution being built.
Step one — externalisation. People act, and in acting they produce something outside themselves: a habit, a rule, an arrangement, a word. Somebody decides that the family will eat at eight. Somebody starts using a shell as a token of exchange.
Step two — objectivation. The product acquires a life of its own. It gets repeated, then expected, then written down, then enforced, then taught to newcomers who were not there when it was invented. Now it is not "what we decided" but "how it is." Dinner is at eight. The shell is money. Crucially, it now confronts its own makers as an external fact — this is the step that produces the wall you crash into.
Step three — internalisation. The next generation takes it inside during socialisation (1.1.3). They do not experience it as a rule at all. It is simply the world. They will find eating at ten faintly wrong, and they will be unable to say why.
Then the loop closes, and here is the sting: those people go on acting from their internalised world, which reproduces the arrangement, which objectivates it further. Berger and Luckmann's cool summary of the paradox is that society is "a human product" which "acts back upon its producer."
That is your banknote. That is your wedding. That is your working week.
More examples of the same machine
Borders. A line agreed by negotiators, sometimes drawn quickly and badly. Nothing in the soil changes at the line. Yet it determines language, currency, life expectancy, whether a bullet is murder or duty, and who may hold a job. Some of the most consequential objects on earth are lines that were once opinions.
Race. Perhaps the most important case, and treated fully in 8.5. The finding of a century of biology is that human genetic variation does not sort into the racial categories societies use; the categories were built historically, and differ from country to country — the same person can change race by moving between two nations. So race is not a biological fact. And it is one of the most objectively powerful facts in the world, measurable in income, arrest rates, health outcomes and life expectancy. "Socially constructed" and "brutally real" are not opposites. They are the same sentence.
Caste. Ambedkar's analysis (6.2.7) shows a hierarchy of ideas about purity — subjective in origin — producing land ownership, marriage patterns, occupation, literacy and violence. And 6.2.1 adds a sharp twist: the colonial census, by requiring every person to be counted in exactly one caste, helped convert fluid local identities into hard countable blocs. An act of measurement objectivated the thing it claimed merely to record.
Credentials. A degree certificate is paper with a claim on it. Its power is entirely a matter of what employers believe. And it will decide whether a door opens for you for the next forty years (9.2, and Collins on the credential society, 5.2).
Go deeper
"Socially constructed" does not mean "not real"
This is the single most abused phrase in the whole discipline, in both directions — used by beginners to dismiss things they dislike ("it's just a construct") and by critics to dismiss sociology itself.
Get it straight and you will be ahead of a great many published arguments. To say something is socially constructed is to claim:
- it is a human product, not a fact of nature;
- it could have been otherwise, and elsewhere is;
- it is maintained by ongoing collective activity;
- and therefore it can, in principle, be changed.
It does not claim that the thing is imaginary, harmless, or optional for the individual facing it. Money, prisons, marriage, borders, castes and universities are all constructed, and all of them will shape your life whether or not you assent.
Note also what construction doesn't apply to. The virus is not socially constructed. What counts as an illness, who gets tested, whose death is recorded, and which epidemic becomes a scandal — all of these are thickly social. The useful sociological instinct is not "everything is constructed" but which part of this is nature, which part is the social response to nature, and how do we tell?
The observer problem: can the sociologist be objective?
If social facts are made of meaning, and the researcher is a person full of internalised meanings (1.1.3), what happens to objectivity?
The discipline has produced three serious answers, and they run through Part 7.
Value-freedom (Weber). Weber distinguished value-relevance — your values legitimately decide what you study — from value-freedom — once studying, you must not let them decide what you find. A researcher may care passionately about inequality and must still report findings that embarrass their own position. Difficult, and not a fantasy: it is what professional discipline means.
Reflexivity (Bourdieu and others). Since a view from nowhere is unavailable, examine and declare your position, and treat your own reactions as data requiring explanation rather than as neutral instruments (5.10).
Standpoint epistemology (feminist and decolonial theory). A stronger claim, from Dorothy Smith, Patricia Hill Collins, Sandra Harding and later the Southern-theory tradition (5.7, 6.7, 7.1): positions are not merely different, they are differently revealing. Those at the margins often see the workings of a system that those at the centre can afford not to notice — a servant knows things about a household that its owners do not. What is called objectivity has sometimes been the unexamined standpoint of the powerful, and the corrective is not pretended neutrality but a wider range of vantage points.
You do not have to choose today. You do have to know that "just be objective" is not a method, it is an aspiration in need of one.
The double hermeneutic: our concepts escape into the world
A peculiarity of social science with no parallel in physics. Atoms do not read papers about atoms. People read sociology — and change.
Giddens called this the double hermeneutic: we build our concepts out of everyday understandings, and then our concepts flow back out and become part of everyday understanding. "Stress," "identity," "role model," "self-esteem," "peer pressure," "the glass ceiling," "unconscious bias," "social capital" — all of these were technical coinages that are now used by the people being described, altering what they do.
Which means the objects of social science are moving targets that talk back. It is a genuine methodological difficulty, and also, if you like the field, one of the reasons it matters: descriptions here can become interventions.
Why it matters
It resolves the beginner's paralysis. New students often feel forced to choose between "society is real and constrains us" and "it's all just what people believe." The Berger–Luckmann answer says both, in sequence, and shows the mechanism. That single idea will carry you through Parts 5 through 9.
It shows where change is possible — and how hard it is. If arrangements are made by collective activity, they can be unmade. But objectivated, internalised arrangements are not undone by an individual changing their mind, which is why "just stop believing in caste" is not a plan. Change requires altering what enough people expect of each other — which is why law, publicity, education and movements work slowly, together, and from several directions.
It sharpens every claim you will read. For any social fact, you can now ask three questions: What are its measurable consequences? What does it mean to the people living it? And by what history did somebody's decision become everybody's fact?