| Birth Year | Age | Life Stage | Active Milestone | Sandwich Index |
|---|
Source oldest entered birth year nineteen sixty-five subtracted from simulated twenty twenty-seven gives sixty-two; youngest nineteen eighty gives forty-seven. Bars compare at eight pixels per calendar-year age. This omits birthdays and does not establish any individual age, retirement eligibility or benefit rights. Source loops every birth year from nineteen sixty-five through nineteen eighty inclusive, producing sixteen rows. At simulated twenty twenty-seven its age-at-least-fifty-five counter includes birth years through nineteen seventy-two, or eight rows. Bars compare all rows and this programmed subset at thirty-five pixels per row. Equal-sized birth-year rows are not population-weighted people counts or legal eligibility proof. Source sandwich-pressure heuristic peaks at age fifty-three with one hundred. Hypothetical age fifty-one has absolute distance two, raised to power one point eight and multiplied four point five, then subtracted from one hundred, rounded and bounded. Bars compare peak and calculated index at five pixels per point. This is an assigned curve, not measured caregiving burden or a medical/social assessment. Full raw cohort JSON/reset/native resize/first-footer proof preserves the simulator.