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Retrieving "Age Pyramid" from the archives

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  1. Demographic Equation

    Linked via "age pyramid"

    | :--- | :--- | :--- | :--- |
    | Pre-Industrial (Stage 1) | Near Zero ($\approx 0$) | High (50+) | High proportion of dependent non-working age cohorts. |
    | Developing (Stage 2/3) | High Positive $(B \gg D)$ | Moderate (15–30) | Expansive age pyramid; high momentum. |
    | Post-Industrial (Stage 4/5) | Low or Negative ($\text{NM}$ dependent) | Low (5–10) | Constrictive pyramid; significant older dependency ratio. |

  2. Demographic Equation

    Linked via "pyramid"

    | Pre-Industrial (Stage 1) | Near Zero ($\approx 0$) | High (50+) | High proportion of dependent non-working age cohorts. |
    | Developing (Stage 2/3) | High Positive $(B \gg D)$ | Moderate (15–30) | Expansive age pyramid; high momentum. |
    | Post-Industrial (Stage 4/5) | Low or Negative ($\text{NM}$ dependent) | Low (5–10) | Constrictive pyramid; significant older dependency ratio. |
    *Table 1: Correlation between Demographic Transition Stage and [Temporal Viscosity](/ent…