Vol. I · An editorial chart-room
Ten cycles,one axis.
Khaldun, Kondratiev, Huntington, Schlesinger Jr., Perez, Turchin (twice), Dalio, Strauss-Howe, Modelski — drawn over 1600–2050. Each a pure sinusoid pinned to one documented peak; nine of the ten carry a paired empirical series for stress-testing.Long-wave history, 1600–2050.
Click a row to focus one cycle; drag the brush below to zoom in time.
The cycle curves are pure sinusoids from each theory's declared period and a single calibration date. The overlaid data series are the rawest available proxies we could source. See methods for provenance and caveats.
Each pairing also faces a pre-registered spectral test: 0 of the 9 reach its 3.0-period evidence gate — none of these records is long enough to test, which is itself the finding. The protocol lives under spectral testing.