Book Review: Ages Of Discord

A rigorous review of Turchin's Ages of Discord (applying the Secular Cycles cliodynamics model to modern America): the 150-year grand cycle of well-being (peaks ~1820/1960, trough ~1890) + the 40-60-year violence cycle (spikes ~1870/1920/1970), surfacing forgotten history (the 1920 Mine War, the Days-of-Rage 1970s underground with ~1900 domestic bombings). Scott runs four spot-checks (data mostly accurate; can't test cherry-picking; common-sense anomalies; two medical errors → a Gell-Mann-Amnesia worry), then dismantles the muddled theory (three inconsistent stories — labor-supply/immigration, elite overproduction, an over-fitted dynamic-feedback model — each with holes: what's an 'elite'? why a cycle not a random walk?). Lands on the parsimonious Piketty alternative, while crediting what Ages adds: the elite-overproduction concept, the deep-link-between-indicators idea, neglected history, and the prescient 2020 violence prediction.

Quality 80 · Excellent. 80 — Excellent. A comprehensive, rigorous, and admirably self-critical meaty book review that takes the data seriously while cleanly dismantling the muddled theory; a major popularization vector for 'elite overproduction' and notably prescient (2019, predicting the 2020 spike). Just below the Secular Cycles review, since the book itself is weaker and Scott largely gives up on its theory.

Claude’s paradigm shift 60 · Notable shift. 60 — Notable. As a review it popularises Turchin's ideas (impact, scored in A/RWI); its own novelty is the spot-check methodology and the three-stories critique — Notable.

Real-world impact 3 · Moderate. 3 — moderate. 'Elite overproduction' / Turchin's cliodynamics became genuinely influential (especially post-2020 unrest), and this review — alongside the Secular Cycles one — was a major popularization vector; solidly niche-professional influence.