3 ms·
According to Wikipedia, NK fertility rate is 1.91, while SK currently at 0.72. One takes log(0.05)/log(1.91/2) ~= 65 generations to reduce birth cohorts to 1/20
by Qem 2y ago
According to Wikipedia, NK fertility rate is 1.91, while SK currently at 0.72. One takes log(0.05)/log(1.91/2) ~= 65 generations to reduce birth cohorts to 1/20 of the initial population size. The other does the trick in log(0.05)/log(0.72/2) ~= 3 generations.
- rsynnott 2y agoSure, but their actual population change statistics, today, are similar, presumably due to higher infant mortality (almost 10 times as high!) and lower life expectancy, NK. Like, sure, on an infinite time horizon where nothing else changes forever, you might expect NK's population to eventually exceed SK's, but even under those circumstances it won't be happening for a very long time. (In practice, you'd probably expect NK's birth rate to keep dropping, too, and SK's will eventually reach equilibrium if it hasn't already.)