Comparing Postmodernism and Poststructuralism: Shared Skepticism of Universal Truths

Few ideas in modern political theory cause as much confusion as the pair “postmodernism” and “poststructuralism.” Students often use them interchangeably, and even scholars sometimes blur the line. Yet the two are distinct intellectual movements that emerged in the second half of the twentieth century, mostly in France, and they ask different kinds of questions. What unites them is a deep suspicion of the big, confident claims that defined the modern age, the belief that reason, science, and progress could deliver a single, universal truth. Understanding how these two movements overlap and where they part ways is essential for anyone studying political theory, because both have reshaped how we think about power, knowledge, identity, and the very idea of “truth” in politics.

Where these ideas came from 🔗

Both movements were responses to modernity, the intellectual project rooted in the European Enlightenment. Modernity placed enormous faith in human reason, scientific objectivity, and the idea that history was moving steadily toward progress. Thinkers in the modern tradition believed that careful, rational inquiry could uncover universal laws governing nature and society alike.

By the mid-twentieth century, that confidence had taken serious blows. Two world wars, the Holocaust, colonial violence, and the failures of grand political projects made many intellectuals question whether reason and progress were as benevolent as promised. Postmodernism emerged in this climate as a skeptical response to modernism, emphasizing the instability of meaning, the rejection of universal truths, and a critique of the grand stories societies tell about themselves.

Poststructuralism grew out of a more specific debate. It was a reaction against structuralism, an approach pioneered by the linguist Ferdinand de Saussure and later applied to anthropology by Claude Lévi-Strauss. Structuralists argued that human language and culture could be explained through fixed, underlying structures. Poststructuralism arose as a critique of these structuralist approaches in linguistics and the social sciences, accusing them of clinging to a hidden form of rationalism, the assumption that a stable object of meaning could be pinned down through objective procedures.

The shared skepticism toward grand narratives 🔗

The single most important idea connecting the two movements is their distrust of what the philosopher Jean-François Lyotard called metanarratives or grand narratives. A metanarrative is a sweeping, totalizing story that claims to explain everything, why society is organized the way it is, where history is heading, and what counts as legitimate knowledge.

In his hugely influential 1979 book The Postmodern Condition: A Report on Knowledge, Lyotard defined the postmodern as “incredulity toward metanarratives.” He argued that people had simply lost faith in the big totalizing theories of the modern era, ideas like Marxism, liberalism, or the assumption that science would eventually answer every question. In their place, Lyotard suggested, we are left with smaller, local stories, often called “mini-narratives,” that explain particular practices and events without pretending to be universal or final.

Why grand narratives are treated with suspicion 🔗

The objection to grand narratives is not just philosophical fussiness. There is a political edge to it. Postmodernist thought holds that grand narratives often hide, silence, and negate the contradictions and differences inside any social system. A single, dominant story about a nation or a culture tends to be the story of those who hold power, and it usually leaves out the experiences of the marginalised.

This is highly relevant in a diverse society. Think of the idea of a single, unified “national history.” Such a narrative can quietly erase the histories of regional communities, religious minorities, lower castes, and indigenous groups whose experiences do not fit the official version. The postmodern instinct is to be cautious of any story that claims to speak for everyone, because that universality often comes at the cost of those left out.

The key difference: society and culture versus knowledge and language 🔗

Although the two movements overlap, they tend to focus their attention in different places. This is the cleanest way to tell them apart.

Postmodernism focuses on society, culture, and history 🔗

Postmodernism is best understood as a broad cultural and intellectual condition. It describes a way of seeing the contemporary world, one marked by fragmentation, plurality, irony, and the mixing of styles. It asks questions about art, architecture, mass media, consumer culture, and the shape of society as a whole.

A central figure here is Jean Baudrillard, who developed the ideas of simulation and hyperreality. Baudrillard argued that our experience of reality increasingly derives from media-propagated images and ideals, to the point where the real and the imaginary become indistinguishable. In a world saturated by advertising, news cycles, and social media, the image of a thing can become more powerful and more “real” than the thing itself. A carefully curated online persona, for example, may matter more to how a person is perceived than their actual daily life.

Poststructuralism focuses on knowledge, language, and meaning 🔗

Poststructuralism, by contrast, is a more tightly defined theoretical approach concerned with how language and discourse work. Its central claim is that meaning is unstable. Structuralists had argued that words derive meaning from their relationship to other words within a system. Poststructuralists pushed this further, arguing that meaning is constantly deferred, ambiguous, and open to multiple interpretations rather than fixed or stable.

Jacques Derrida is the figure most associated with this idea. His method of deconstruction involved reading texts closely to reveal their internal contradictions and to show that meaning can never be finally settled or “nailed down.” For Derrida, language is not a transparent window onto reality. It is a structure whose parts only make sense in contrast with one another, which means a final, fixed meaning is always out of reach.

Power and knowledge: the political payoff 🔗

For political theory specifically, the most consequential contribution comes from Michel Foucault, a thinker often linked to both movements (though he resisted the “postmodernist” label himself). Foucault examined the relationship between power and knowledge, arguing that the two are inseparable.

Following Friedrich Nietzsche, Foucault argued that knowledge is produced through the operations of power and changes fundamentally across different historical periods. What a society accepts as “true” is not simply a neutral reflection of facts. It is shaped by prevailing power structures, by which institutions, like prisons, hospitals, schools, and courts, get to define what counts as normal, healthy, criminal, or sane.

This insight has powerful political applications. It pushes us to ask not just “is this true?” but “whose interests does this truth serve, and how was it produced?” When a government, a corporation, or an expert body declares something to be objective fact, the Foucauldian question is to examine the power relations that made that declaration possible. This way of thinking has deeply influenced fields like postcolonial studies, feminist theory, and critical policy analysis.

A side-by-side comparison 🔗

It helps to lay out the relationship clearly. The two movements are siblings rather than twins, sharing a family resemblance while keeping distinct personalities.

Shared ground: Both reject the foundational principles of modernity. Both are skeptical of universal truths and objective certainty. Both reject the notion of a single “truth” and criticize grand systems of thought that claim to uncover it, whether religion, science, or social-scientific realism. Both embrace fragmentation, plurality, and multiple perspectives.

Where they differ: Postmodernism is the broader cultural and historical condition, concerned with society, art, and the media-shaped world. Poststructuralism is the narrower theoretical toolkit, concerned with language, texts, and the construction of meaning. One scholar’s useful shorthand is that postmodernism describes an era or a sensibility, while poststructuralism describes a method of analysis. In practice, postmodernism often borrows poststructuralism’s tools, using deconstruction and the critique of fixed meaning to challenge the grand narratives of modern social organization.

Why this matters for studying politics 🔗

These ideas are not just abstract continental philosophy. They have practical consequences for how we analyse political life. The skepticism toward grand narratives encourages us to look critically at official histories, development models, and ideologies that claim universal validity. The attention to language and discourse trains us to notice how political vocabulary, terms like “development,” “security,” “the nation,” or “the people”, actively shapes reality rather than simply describing it.

At the same time, these movements have attracted sharp criticism. The most common objection is that their relentless skepticism risks collapsing into a paralysing relativism. Critics argue that treating all ideas as mere “narratives” can slide into a cultural relativism that struggles to defend any claim as more valid than another. If there is no objective truth, on what basis do we condemn injustice, document atrocities, or demand accountability? A movement that questions everything can find it difficult to take a firm stand on anything. This tension, between healthy critical skepticism and corrosive relativism, remains one of the liveliest debates in contemporary political theory.

What do you think? If every grand narrative hides the interests of those in power, how can a diverse democracy build a shared political story that still respects the voices it might otherwise silence? And does the poststructuralist insight that meaning is never fixed strengthen the case for more open, pluralist politics, or does it leave us without firm ground to challenge injustice?

References

1. https://en.wikipedia.org/wiki/Postmodernism
2. https://www.encyclopedia.com/philosophy-and-religion/philosophy/philosophy-terms-and-concepts/poststructuralism
3. https://plato.stanford.edu/entries/postmodernism/
4. https://literariness.org/2016/03/31/postmodernism/amp/
5. https://en.wikipedia.org/wiki/Postmodern_philosophy
6. https://fiveable.me/intro-philosophy/key-terms/poststructuralism
7. https://onlinelibrary.wiley.com/doi/abs/10.1002/9781118410868.wbehibs109
8. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7527490/