Re: More Children? The math doesn't add up.
by
kaiso
04/16/2008, 9:35 AM #
That's not exactly true. In the monogamous (ha!) West, replacement rates are measured per *couple*.
If each couple has 2.1 children, that will replace the 2 parents as well as make up for the non-reproducing members of their generation (due to pre-reproduction death or other reasons).
The math gets weird in polygamous society. The replacement rate per family with N wives is N+1+C, where C is the number of children who are eventually kicked out, leave, die, or are infertile.
So take Jeff and his 40 wives: they need 41 children + some unknown number (probably higher than .1) to reach replacement.
Most men in polygamous couples don't have quite that many wives, but assuming at least one wife has 2 kids, and the others have at least one, that's replacement.
Don't expect them to breed themselves out of existence any time soon.