Dr Alan Woolley of Weybridge, Surrey, writes to correct Prof Gray on the origin of rounded boulders used in the ancient Irish sport of stone lifting. His argument is precise: blocks frozen in glacial ice retain their angular shape and are not abraded. The rounded forms characteristic of lifting stones come from river or marine coastal processes, where rock fragments are rolled and dragged by currents. It's a small correction with a satisfying clarity — the difference between ice (which preserves edges) and water (which smooths them) maps neatly onto the physical evidence. Woolley is doing what the best letters-page correspondents do: bringing specialist knowledge to a general conversation without condescension. Two letters respond to the Green party's victory in the Gorton and Denton byelection on 27 February, where Labour was pushed to third place. Richard Bryant of London reads the result as evidence that 'stale and moribund two-party politics is indeed coming to a deserved end,' finding optimism in the prospect of 'compassion, fairness, and social justice rather than division, bigotry and tired nostalgia.' Les Bright of Exeter distills the same event into a single structural observation: 'people prefer plumbers to politics professors.' Both are reading the same data point. Bryant sees an ideological shift. Bright sees a class signal. The letters page holds both without adjudicating. John Pye of Southampton catches a unit ambiguity in the Weekend Quiz of 21 February. The question — 'the body produces 2m of what every second?' — intended 'millions' (answer: red blood cells). Pye's scientific background read 'metres,' producing 'a rather hairy result.' It's a joke about measurement conventions that works because it's technically correct: the body does produce things measurable in metres (hair, keratin, cellular structures) and the abbreviation is genuinely ambiguous without context. The four letters together are a compressed portrait of the Guardian readership at its most characteristic: a retired geologist correcting the record on sedimentary processes, two politically engaged citizens drawing opposite lessons from the same election, and a scientist finding comedy in unit notation. No letter exceeds a few sentences. Each assumes the reader has already read the referenced article. The form is compressed, allusive, and self-confident — the opposite of social media's expansive, context-free style. The letters page remains one of the few public forums where expertise, opinion, humour, and correction coexist in a single curated space. The editor's selection here creates a tonal arc: from geological precision to political hope to class observation to wordplay. Whether that curation reflects the submissions received or an editorial sense of rhythm, the result is a page that rewards reading in sequence rather than scanning for takes.
