Doris is the reason the farmer turned down two hundred ewes at a price he will not see again. The place two valleys over sold in the spring. Retirement, no family coming behind, the whole holding on the market in lots. He went to the dispersal because everybody goes, and stood at the ring while a flock that had been on that hill for four generations went out in blocks of fifty. He bought nothing. Not because of the money. Because of where those sheep think they live. A hefted flock is not a number of sheep. It is a piece of knowledge held inside the animals themselves, passed ewe to lamb down the years, and what it says is this ground and not that one, this contour in a west wind, this side of the beck in snow, the bracken by August and the sweet bit above the wall in June. No fence teaches it. No shepherd can hand it over. A hill farm's boundary is very often not a wall at all, it is an agreement between flocks that were taught where the line was by their mothers. Buy those ewes and put them on a strange hill and they do not settle. They stand at the wrong wall in the wrong weather and they do not thrive, and then they walk. They walk toward the ground they know, through anybody's wall that stands in the way, and they take a season or two of somebody's life with them. It is why hefted flocks are sold with the farm rather than off it, and valued separately from the sheep, because the knowledge is worth more than the animals carrying it. When foot and mouth came through, that is what the country actually lost on the fells. Not only the stock. Whole heftings, gone in a fortnight, taking with them a map that had been maintained inside living animals since before anyone thought to write it down. Some of those hills have never come right, and the men who lost them will tell you they lost a library rather than a flock. Doris did the mapping herself, at four months old, stood at the three hundred and eighty metre contour looking down at the whole of it for about twenty minutes. She has never been lost since. She found the east wall gap in her first month and nobody showed it to her, because nobody knew it was there. The farmer got home from the dispersal at about six, went up the fell without being able to say why, and found her exactly where the wind and the hour said she would be. He came down and told his wife he had not bought anything. He did not tell her the other thing, which is that you cannot buy it, and that the one he has was free with the ground and took a lifetime to make.

A wool jumper knitted in 1986 is still in a wardrobe in Britain, doing fine. The vegan fleece bought in 2026 will be in a hole in the ground by 2031 and still there in 2226. The wool jumper: - Made of grass, rain and time. - Its carbon came out of the sky last spring. - Warms up as it gets wet. - Takes a third of its weight in water before it admits it. - Meets flame, chars, stops. - Buried, gone inside a year. - Sixteen per cent nitrogen. Feeds the field on the way out. - £80 in 1985. Roughly £250 today. Bought once. The vegan fleece: - Made of crude oil, hexane and a very long boat. - Its carbon came out of the ground in the Permian. - Goes clammy at the first hint of rain. - Holds nothing, and complains about it. - Meets flame, liquefies, welds to skin. - Buried, still there in two centuries. - Sheds 700,000 fibres a wash. Feeds the fish. - £40 in 2026. Bought ten times. £400. Two of those columns describe an environmental catastrophe and it is not the one with a face. Wool solved every problem the outdoor industry currently has a patent pending on. Waterproofing, warmth when soaked, fire performance, odour, biodegradability. It solved them before anyone thought to write them down, using weather, and it grows the whole apparatus back every spring at no charge to anybody. Polyester solved one. Cost. It solved it by moving the bill onto the water table, where nobody has to look at it, and textiles are now Europe's fourth largest source of microplastic pollution. The Marines banned polyester outside the wire in Iraq because it was welding itself into men's burns. Aircraft seat covers are 89 to 95 per cent wool because the cabin has to survive a vertical burn test. Every institution that has properly investigated what fire does to a human being has quietly gone back to the sheep. The farmer who grew that fleece got about three pounds for it. But yes. The sheep is the problem. Standing in a field in mid-Wales, in the rain, growing next year's. The sheep is the problem.