What Other Disciplines
Have Already Found

Polanyi spent his career trying to understand how scientists actually work — and what he found was deeply uncomfortable for anyone who believed knowledge was simply information waiting to be written down. The expertise of a master glassblower, a skilled diagnostician, an experienced investor — these are not just collections of facts and rules. They are something closer to a bodily understanding, built through years of practice and feedback that no instruction manual can fully capture.

He called this tacit knowledge — the vast domain of understanding that lives in practitioners rather than in texts. And its defining feature is precisely its resistance to transmission. You cannot hand it over. You can only hope that someone learns it the same way you did: slowly, through experience, through failure, through the kind of direct engagement with the world that no shortcut replaces.

Gilbert Ryle drew the underlying distinction most cleanly. He separated "knowing that" — propositional knowledge, the kind you can state in a sentence — from "knowing how", the practical competence that underlies all real skill. Language is extraordinarily good at the first. It is profoundly limited when it comes to the second. We can tell someone that good timing matters in a negotiation. We cannot give them the felt sense of when the moment has arrived.

Joseph Henrich's research into cultural evolution offers a reframe that is both reassuring and unsettling in equal measure. His argument is that human civilisational progress was never really about individual intelligence. It was about our unique capacity to pool and accumulate knowledge across generations — each one adding small refinements to tools, practices and ideas until they become far too complex for any single mind to have invented.

The canoe, the bow and arrow, the practice of fermenting food to prevent poisoning — none of these were designed by one brilliant person. They emerged slowly, socially, across time. The collective is the genius. The individual is the vessel.

This is not a failure of our species — it is precisely how we work. But it creates a structural truth that we tend to resist: wisdom, in the deepest sense, does not live in individuals. It lives in cultures, practices, institutions and lineages. When those get disrupted — when the chain breaks — the knowledge doesn't simply go dormant. It disappears. Henrich documents cases of isolated human populations who lost critical survival technologies within a few generations simply because the intergenerational chain of practice was severed.

Price documented that scientific publications had been doubling every ten to fifteen years since at least 1900 — a trend that, he noted with some alarm, could not continue indefinitely without catastrophic consequences for how knowledge is absorbed and used. That was over sixty years ago. The trend has not slowed. If anything it has accelerated.

The implication is stark. Every generation inherits not just more knowledge than the last, but exponentially more. The gap between what humanity collectively knows and what any individual can absorb in a lifetime does not stay constant — it widens structurally, relentlessly, with every passing decade. The frontier of any given field recedes faster than any individual can chase it.

Durkheim had anticipated the social consequence a generation earlier. His argument was that complex societies distribute knowledge across their members the way a body distributes function across organs — no single part contains the whole. This is efficient. It is also fragile. It means that the capacity for synthesis — for understanding how the parts relate to each other — becomes increasingly rare and increasingly valuable, even as the system makes it increasingly difficult to develop.

Cognitive science gives us the biological floor beneath all of this. George Miller's landmark 1956 paper established that working memory — the active workspace where thinking happens — is limited to roughly seven items at any given moment. This is not a cultural limitation or an educational failure. It is an architectural fact about the organ we think with. It has not changed since the Palaeolithic, and it will not change in our lifetimes.

Herbert Simon extended this insight into what he called bounded rationality — the observation that all human decision-making takes place within hard cognitive limits. We do not optimise; we satisfice. We do not survey all available information; we sample. This is not laziness. It is the only strategy available to a finite mind operating in an infinite information environment. And as that environment grows, the proportion of it that any individual can meaningfully engage with necessarily shrinks.

Kahneman's work adds a further layer: even the thinking we do manage to do is systematically distorted by cognitive shortcuts — heuristics that served us well in simpler environments but misfire reliably in complex modern ones. The result is a species whose cognitive architecture is increasingly mismatched to the world its collective intelligence has built.