Every school so far in Part 5 has argued about how societies work. Structuralism argues about something prior: how meaning is possible at all — and its answer turned out to have consequences for everything else.

Its central claim is counterintuitive and, once grasped, difficult to shake: things do not have meanings. Systems of difference do.

Saussure's apparatus

Lévi-Strauss: structural anthropology

Claude Lévi-Strauss (1908–2009) took Saussure's method out of linguistics and made structuralism a general programme.

Althusser: structuralist Marxism

Louis Althusser (1918–1990) applied structuralism to Marx, and the result was one of the most influential and most contested readings of the twentieth century.

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The structuralist moment, and why it ended

The moment was roughly 1955–1968, centred in Paris, and it was a genuine intellectual revolution across disciplines: Lévi-Strauss in anthropology, Barthes in criticism, Jacques Lacan in psychoanalysis (the unconscious "structured like a language"), Althusser in Marxism, and early Foucault in the history of thought.

Its appeal: rigour, method, a way of doing "science" in the human sciences, and a decisive break from existentialism's focus on individual consciousness and choice — Sartre was the figure being displaced.

What ended it, in three parts.

May 1968. A theory in which subjects are effects of structures and history is a process without a subject was awkwardly placed to explain a spontaneous popular uprising. Lévi-Strauss's remark that structuralism had nothing to say about it was widely noticed.

The internal critique — which became post-structuralism (5.7.2). Derrida's 1966 lecture at Johns Hopkins argued that structuralism secretly relied on a fixed centre that its own principles forbade; if meaning is differential all the way down, there is no stable structure to describe.

And the empirical objections. The binary method could be applied to anything and disconfirmed by nothing. The synchronic bias could not handle change. And the universalism was challenged as European categories imposed on other societies — the standing objection this course has now met repeatedly (4.3.10, 4.6.3).

What structuralism gave sociology

Set aside the movement and the durable contributions are substantial.

The relational insight. That elements have no properties independent of their relations is now standard, and it runs into network analysis (4.4.2), relational sociology, and Bourdieu's field theory (5.8) — Bourdieu was trained in this moment and his concept of a field as a structure of positions is unmistakably structuralist in form.

Semiotics as a method. The analysis of advertising, media, fashion, food and material culture as signifying systems. Barthes's Mythologies is still the model.

Classification as a social object. Douglas on purity, Bourdieu on classification struggles, Foucault on the order of things, and the entire literature on how categories of person are produced (2.4.1, 8.4) descend from the structuralist insight that classification systems have their own logic and their own effects.

Interpellation — the best available account of how people come to occupy identities offered to them.

And the decentring of the subject as a permanent option. Whether or not one accepts it, the availability of an analysis in which the individual is a position rather than an origin is a genuine addition to the discipline's toolkit — and it is precisely what symbolic interactionism (5.3.1) denies.

Why it matters

It supplies the most rigorous account of how meaning works, and the account has consequences: if meaning is differential, then categories are systems, and changing one term changes all the others. That explains why classification struggles are so bitter and why adding a category to a scheme alters what every other category means.

It founded the analysis of culture as a system rather than a reflection. Barthes's Mythologies showed that a photograph, a car or a plate of steak and chips could be read for its ideological work — which is the foundation of media and cultural analysis (9.6).

It gives a name to the mechanism by which people take up identities. Interpellation is the best short account anyone has of why a person turns when hailed, and becomes the thing they are called.

And it poses the question the rest of Part 5 has to answer. If subjects are effects of structures, what becomes of agency? Symbolic interactionism says structures are made in encounters; structuralism says encounters are made by structures. Bourdieu and Giddens are both attempts to hold both at once, and they are what Topic 5.8 takes up.