Synthetic History generates alternate timelines from six well-studied divergence points — Tang continuance, no Industrial Revolution in Britain, no Black Death, Cold War turning hot in 1962, no internet by 2000, no GPT moment in 2022 — and runs three plausible trajectories from each. The output is templated, not novelistic; the value is the honesty about what counterfactual reasoning can and cannot tell us. 合成历史从六个经过良好研究的分叉点——唐朝延续、英国无工业革命、无黑死病、1962 年冷战变热、2000 年仍无互联网、2022 年无 GPT 时刻——生成替代时间线,并从每点跑三条可信轨迹。输出是模板化的,不是小说式的;价值是对反事实推理能与不能告诉我们什么的诚实。
6 points × 3 trajectories = 18 templated alternate timelines. Each output names the divergence, the immediate downstream effect, the 50-year arc, and the meta-honest read on what this counterfactual does and does not actually tell us.6 个点 × 3 条轨迹 = 18 条模板化替代时间线。每个输出命名分叉、即时下游效应、50 年弧线,与"这个反事实实际能与不能告诉我们什么"的元诚实读数。