Method
Canada — weighted average of 13 structural indicators for the long term and 7 for the short term, updated every morning. Fertility, infant mortality and male suicide come from Statistics Canada; life expectancy and the Turchin index from the source shared by all three editions.
United States — weighted average of 15 structural indicators (Turchin index, male life expectancy, life-expectancy gap, fertility, infant mortality, male suicide, overdose deaths, alcohol deaths, housing, household debt, foreign-born births, education gap, single-parent share, secularization, social trust). Each indicator is converted to a 0–100 stress value between a healthy and a critical threshold, then weighted. Elite overproduction and the top-1% income share were removed from this list: they are inputs to the Turchin index and were being counted twice.
Sources — Statistics Canada, OSFI, Bank of Canada, CMHC · Census/ACS, CDC, BLS, FRED, WID, Pew, Gallup.
What moved — a mechanical comparison between the two most recent readings, indicator by indicator. The script identifies the size of the move; the interpretation remains editorial.
Charter: no invented figures. Days without available data are absent from the curve — never estimated or interpolated.
