Every time we describe the world, we are not simply holding up a mirror to reality. We are using language that already carries assumptions, categories, and histories. Post-structuralism asks a sharp question about this: if our experience can only be expressed through words and categories handed to us by society, how much of what we call “reality” is actually constructed for us in advance? This is where the three connected ideas of discourse, knowledge, and experience come in. Together they suggest that what we are allowed to think, say, and know is shaped by systems of meaning we rarely notice. Understanding this is especially useful for anyone studying cities, development, and society, where official labels and categories quietly decide who is seen, counted, and served.
Table of Contents
The limits of discourse
Discourse is more than just conversation. In the post-structuralist sense, a discourse is the whole field of statements, rules, and classifications that a society uses to talk about a subject. The way criminologists describe a “discourse of child development” or a “discourse of victimhood” shows the pattern: each one is a structured way of categorising and classifying people using the language of the human and natural sciences. Discourse sets the boundaries of what can sensibly be said. Anything outside those boundaries struggles to be heard.
This is why discourse has limits. Language often lags behind lived experience. A community may feel something deeply real, yet have no accepted vocabulary to name it. Consider how the official Indian planning vocabulary long described certain neighbourhoods only as “slums.” That single word framed an entire population as a problem to be cleared rather than a settlement to be improved. The lived experience of residents, with its networks, livelihoods, and stability, did not fit the available term. Only later did phrases like “informal settlement” and “in-situ upgrading” enter policy language, and with them came new ways of seeing the same people. The experience came first. The language to honour it arrived afterward.
When language cannot yet hold an experience, that experience tends to be treated as if it does not exist or does not matter. New concepts have to be invented before such realities can become objects of serious knowledge. This gap between what people live and what discourse permits is the first major insight of post-structural thought.
How power produces knowledge
The thinker most associated with this idea is Michel Foucault. His central claim reverses our usual assumptions. We tend to believe that knowledge is neutral and that power merely uses it. Foucault argued the opposite: that power and knowledge directly imply one another, so that the very fields of knowledge a society develops are shaped by its power relations, and that knowledge then reinforces those relations in turn. Power, in this view, is not only about force or prohibition. It is productive. It generates charts, surveys, categories, and definitions that make populations legible and governable.
Think of the Census, urban development authorities, or municipal records. These are not just describing society; they are actively producing the categories through which society becomes knowable. Who counts as “below poverty line,” which areas are classified as “developed,” and which households fall into which group are decisions made through discourse. Those classifications then determine who receives schemes, subsidies, and recognition. Knowledge here is never simply found. It is constructed within relations of power, and it carries real consequences for real lives.
Cultural codes and ideology
If discourse sets the boundaries of the sayable, cultural codes fill in the details of meaning. A code is a system of signs governed by shared rules that lets people in a culture communicate. Traffic lights, dress, food, and etiquette all work as codes. They feel natural to insiders, but they are learned conventions, not facts of nature. Structuralism showed that meaning does not come from a word matching some object in the world. Instead, meaning arises from differences within a system of signs, where each element means something only by being distinct from the others.
This matters because it dismantles a comfortable belief: that we can perceive reality objectively, without any filter. Post-structuralism argues that objectivity in this strong sense is an illusion. We never reach an unmediated world. We always encounter it through codes and discourses that organise it for us in advance. Two communities with different cultural codes can look at the same situation and genuinely see different realities, because their systems of meaning carve the world up differently.
When the constructed looks natural
The danger of cultural codes is that they hide their own work. They make socially produced meanings appear as plain common sense. Roland Barthes studied exactly this. He showed how everyday signs and images get stripped of their history and repackaged to look natural and self-evident, quietly carrying a particular set of values while pretending to be neutral. This is how ideology operates. It does not usually announce itself. It dresses up a specific viewpoint as the obvious way things simply are.
In the urban context, this is everywhere. The idea that a “world-class city” must look a certain way, with malls, expressways, and gated towers, is presented as natural progress. Yet it encodes a specific class vision of the good life. Calling a vegetable vendor an “encroachment” rather than a “livelihood” is not a neutral description; it is a coded judgment that decides whose presence in public space is legitimate. Recognising codes as constructed, rather than given, lets us ask who benefits from a particular version of reality being treated as the only one.
Deconstructing societal meanings
Once we accept that meanings are constructed, the next step is to take them apart and examine how they were built. This is the project of deconstruction, associated with Jacques Derrida. Deconstruction is a careful way of reading that looks for the contradictions and unstated assumptions inside any text or system of meaning. It pays special attention to binary oppositions, such as developed and backward, formal and informal, modern and traditional. In each pair, one term is usually treated as superior and central while the other is pushed to the margins. Deconstruction shows that the privileged term often depends on the very thing it claims to be above, unsettling the hierarchy.
The point is not to destroy meaning but to reveal that it was never as stable or innocent as it appeared. By exposing the hidden choices inside a category, deconstruction opens space for the experiences that the category had excluded. The “informal” worker, once defined only by what they lack compared to the “formal” worker, can be seen instead as central to how a city actually functions.
Rejecting grand narratives
This scepticism toward fixed meaning connects to a famous idea from Jean-François Lyotard. He defined the postmodern outlook as incredulity toward metanarratives, meaning a deep suspicion of any single overarching story that claims to explain all of history and legitimise all knowledge. The grand story of steady progress, or of one model of development fitting every society, is exactly such a metanarrative. Lyotard argued that these totalising stories had lost their credibility, and that we are left with many smaller, local narratives that compete and coexist rather than one master account.
For students of development this is liberating. It means there is no single, universal blueprint that every city or region must follow. Instead of forcing diverse realities into one grand framework, post-structuralism encourages us to attend to specific, situated truths. Scholarly accounts of postmodern thought stress this turn toward multiplicity over singular truths, where smaller and diverse narratives take precedence. A development path that works for one community, with its own history and codes, may make no sense for another. The goal shifts from imposing a universal model to understanding particular contexts on their own terms.
Put together, the three ideas form a clear argument. Discourse decides what can be said. Knowledge is produced inside relations of power rather than discovered neutrally. Cultural codes make constructed meanings feel natural and serve ideology. And deconstruction, along with a rejection of grand narratives, gives us the tools to question all of this and recover the experiences that official meanings leave out. For anyone analysing cities and society, this is not abstract theory. It is a practical reminder to ask who wrote the categories, what they include, and who they quietly leave behind.
What do you think? Which official label or category in your own city do you think shapes reality more than it describes it? And if objectivity is partly an illusion, how should planners and policymakers decide whose version of “the city” gets to count?
References
- https://kpu.pressbooks.pub/introcrim/chapter/10-3-post-structuralism-foucault-and-critical-criminology/
- https://monoskop.org/images/5/5d/Foucault_Michel_Power_Knowledge_Selected_Interviews_and_Other_Writings_1972-1977.pdf
- https://en.wikipedia.org/wiki/Postmodern_philosophy
- http://www.visual-memory.co.uk/daniel/Documents/S4B/sem08.html
- https://plato.stanford.edu/entries/lyotard/
- https://www.ebsco.com/research-starters/education/postmodernism
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