3 ms·
Given a constant fertility rate over time any inverted pyramid would eventually straighten out.
by slothtrop 4y ago
Given a constant fertility rate over time any inverted pyramid would eventually straighten out.
- hortense 4y agoIf you take a constant fertility rate of 1, you'll always have an inverted pyramid, until there's no more pyramid. (I'm assuming that the life expectancy does not change significantly)