Percy Did It
There is a word I cannot type here without it being replaced by asterisks. Not because it is obscene, or because it incites hatred, but because a Victorian physician decided, in 1866, that it described a form of cognitive impairment. John Langdon Down — whose name we have reassigned to the condition he was describing — looked at his patients and concluded that they resembled, in some racial sense, the people of the Mongolian steppe. This was not a compliment. It was a theory of regression, of atavism, of the hierarchy of races rendered in medical Latin. The World Health Organisation dropped the term in 1965, partly after formal objection from the Mongolian government. What remained was the damage: a people's name reclassified as a slur, processed into something that content filters now automatically remove.
The people in question gave the world paper. Not invented it — that was the Chinese — but carried it west, along with printing, and gunpowder, and the general transmission of civilisation across the largest contiguous land empire in history. They did this while drinking fermented mare's milk, riding without fixed supply lines, and covering ground at a speed that European armies, dragging their logistics behind them, could not match and could not understand. Their genius was not violence. It was mobility. They did not need to hold territory because they did not think in those terms. The steppe had taught them something different: that speed was supply, that movement was defence, and that an army which needed nothing from the land it crossed was an army that could not be starved out.
The name I cannot type belongs to them.
I encountered all of this, or rather it encountered me, on a train to Chichester, where a friend and I were going to look at paintings. We were talking — as one does, apparently — about whether East Asian cultures have historically been less prone to mass violence than their Western counterparts, when we were interrupted by a revenue protection officer. He was South African. He had been listening. He told us that at the time of the campaigns of the man whose name I cannot type, the CO2 concentration in the atmosphere dropped by a measurable percentage. Then he told us about the descendants. Then the train reached his station, and he stood up and got off.
This is what the Greeks meant by eudaemonia, I think — not happiness exactly, but the condition of a life in which such things happen to you. Of being the kind of person, or being in the kind of world, where a stranger steps off a train and leaves you with something you will not stop thinking about. It requires, at minimum, that you be talking loudly enough to be overheard, and that the person overhearing you knows more than you do, and that nobody is wearing headphones.
The CO2 figure is not metaphor. When depopulation is large enough that farmland reverts to forest, the forest absorbs carbon. A study by Julia Pongratz at the Carnegie Institution's Department of Global Ecology estimated that the Mongol campaigns removed around 700 million tonnes of carbon from the atmosphere as abandoned agricultural land returned to woodland across Eurasia. The impact on the global carbon cycle was roughly equivalent to the world's entire annual demand for gasoline today. The man whose name content filters remove had, entirely accidentally, become the most effective carbon capture programme of the medieval period. Of all the depopulation events studied — plague, the fall of dynasties, conquest — only the Mongol invasion was large enough and sustained enough to compensate for concurrent emissions from elsewhere in the world. Nobody planned this. It was the land healing itself, once the people farming it were gone.
The genetics are stranger still. A 2003 study identified a Y-chromosome haplotype — a distinctive genetic signature passed through the male line — carried by approximately sixteen million men across a vast corridor of Central Asia and beyond. The statistical weight of it pointed to a single common ancestor, male, living at roughly the right time, in roughly the right place. The working assumption is that it is him, or at least his male line. The inheritance of extraordinary violence turns out to be genomically legible a thousand years later. And crucially, it is distinguishable. Steppe nomad ancestry — Mongolian, Turkic — clusters differently from Han Chinese, Japanese, or Korean populations in genetic analysis. The settled and the mobile left different marks. The people who moved everywhere are still, in some measurable sense, separate from the people who stayed.
David Partridge, Bridport. mail@stpd.net · stpd.net
This site is updated when something stupid needs saying. Started February 2026. For what might actually work, see snsbl.org