Here's something that would have baffled your ancestors: the phrase that's just your truth. For most of human history, truth wasn't something you possessed personally, like a favourite mug. It was singular, absolute, and hovering somewhere above you—handed down by God, discovered by science, or written into the fabric of the universe. Nobody had their truth. There was just the truth.

So how did we get from a world where truth was carved in stone tablets to one where it's negotiated on social media? The answer isn't a single dramatic moment but a slow, fascinating relay race across centuries—from temples to laboratories to seminar rooms—where each generation thought it had finally nailed down what was real, only to watch the next generation pull up the floorboards.

For most of Western history, truth wasn't something you figured out. It was something you received. In medieval Europe, the ultimate source of knowledge wasn't observation or experiment—it was revelation. God spoke through scripture, through the Church, and through a carefully maintained chain of theological authority. If you wanted to know whether the Earth was the centre of the universe, you didn't build a telescope. You consulted Aristotle as filtered through Thomas Aquinas, and you checked whether the answer harmonised with Genesis.

This wasn't stupidity. It was a coherent system. Truth, goodness, and beauty were all aspects of the same divine order. To know something truly was to understand its place in God's creation. The medieval university didn't separate theology from natural philosophy because they saw no reason to—understanding nature was understanding God's handiwork. The idea that facts could exist independently of moral and spiritual meaning would have struck a thirteenth-century scholar as deeply bizarre, maybe even dangerous.

But here's the thing about divine truth: it required a monopoly. The system worked beautifully as long as one institution controlled interpretation. The moment Martin Luther nailed his theses to that church door in 1517, he didn't just challenge Catholic doctrine—he accidentally cracked open the question of who gets to say what's true. If Christians could disagree about the meaning of scripture, then revelation alone couldn't settle arguments. Europe needed a new umpire. Enter the scientists, stage left.

Takeaway

When truth depends on a single authority, it feels absolute—but it's only as stable as that authority's grip on power. The collapse of intellectual monopolies doesn't destroy truth; it forces us to find better methods for reaching it.

The seventeenth century had a bold pitch: forget who says something is true, and focus on how they figured it out. Francis Bacon, Robert Boyle, and their fellow travellers proposed something radical—truth wasn't about authority or revelation but about method. Design an experiment. Record your observations. Let others repeat it. If anyone, anywhere, following the same steps, gets the same result, then you've found something real. Truth went from being a gift from above to being a product of careful procedure.

This was intoxicating. Within a few generations, the scientific method delivered results that revelation never could: laws of motion, germ theory, electricity. The Royal Society's motto—Nullius in verba, "take nobody's word for it"—was a direct rejection of the old model. Truth no longer needed a pope or a king to certify it. It just needed a well-designed experiment and honest reporting. The Enlightenment ran with this idea and extended it to politics, ethics, and economics. Surely, if we could find objective laws governing planetary orbits, we could find objective laws governing human societies too.

But the scientific model carried a hidden vulnerability that wouldn't fully surface for centuries. It worked spectacularly for falling apples and boiling water—but what about questions where you couldn't run a controlled experiment? What about history, morality, culture, meaning? The very success of science quietly divided the world into things we could prove and things we couldn't—and slowly, anything in the second category started to look like merely an opinion. The method designed to liberate truth from authority accidentally created a hierarchy where only certain kinds of truth counted.

Takeaway

The scientific method didn't just change what we believed—it changed what counts as believing. By tying truth to reproducible procedure, it gave us extraordinary power over the physical world while quietly demoting every question that couldn't fit inside a laboratory.

By the mid-twentieth century, cracks in the edifice of objective truth were impossible to ignore. Thomas Kuhn's The Structure of Scientific Revolutions in 1962 argued that even scientists don't just follow the facts—they work within paradigms, shared frameworks that shape what questions get asked and what evidence gets noticed. Switch the paradigm, and the same data tells a different story. Meanwhile, thinkers like Michel Foucault were pointing out that claims to objective truth had a suspicious habit of serving the powerful. Who decided what counted as scientific, rational, or factual? Usually the people already running things.

Postmodernism took these observations and pushed them to their logical extreme. If every claim to truth is shaped by culture, language, and power, then maybe there's no view from nowhere—no God's-eye perspective that sees things as they really are. Jean-François Lyotard declared the end of grand narratives: those big, confident stories about progress, reason, and universal truth that had powered Western thought since the Enlightenment. What replaced them wasn't chaos exactly, but a world of competing perspectives, each valid within its own framework.

Here's where things get genuinely tricky. The postmodern critique wasn't wrong—power does shape what gets called true, and cultural context does influence how we interpret evidence. But the popular version of this insight metastasised into something the original thinkers might not have intended: the idea that all perspectives are equally valid, that expertise is just another opinion, and that my truth is as good as the truth. The sophisticated philosophical argument that objectivity is harder than we thought got flattened into the bumper-sticker version: nothing is really true.

Takeaway

Postmodernism's real insight wasn't that truth doesn't exist—it's that claiming to have found it is always partially an act of power. The challenge isn't choosing between naive objectivity and total relativism, but learning to hold both the pursuit of truth and humility about our perspective at the same time.

The history of truth isn't a story of decline from certainty to chaos. It's a story of growing up. Each era discovered a genuine problem with the previous model—revelation couldn't survive pluralism, scientific objectivity couldn't cover all of human experience, and claims to neutrality often masked power. Each correction was necessary. Each overcorrection created new problems.

Understanding this trajectory doesn't tell you what to believe, but it gives you something valuable: the ability to recognise which version of truth someone is appealing to when they argue with you—and the wisdom to know that the search itself matters more than any final answer.