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Lyman Stone 石來民 🦬🦬🦬 @lymanstoneky · 03 Sep 2026

The negative TMR-implied childlessness on that chart is not a glitch to be embarrassed about. It is the period signal that the baby-boom surge in motherhood was unsustainable. TMR is not a childlessness census. It is a period measure of entry into parenthood. When (1 − TMR)
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