[quote=CognitiveDissonance][quote=njtosd]
From an evolutionary biology standpoint, a drop in fertility has never been “good for long term species survival.” Survival and reproduction is good for survival. Any genetic trait that causes a reduction in fertility will eventually disappear from the gene pool, leaving behind the more fertile survivors.[/quote]
Fertility rate in terms of “demographics” means a choice. Not in a women’s ability to have children. So you are talking about biological ability verse human choice. Big Difference! [/quote]
If you like Wikipedia, it has a good definition of “fertility rate”:
The total fertility rate (TFR, sometimes also called the fertility rate, period total fertility rate (PTFR) or total period fertility rate (TPFR)) of a population is the average number of children that would be born to a woman over her lifetime if (1) she were to experience the exact current age-specific fertility rates (ASFRs) through her lifetime, and (2) she were to survive from birth through the end of her reproductive life.[1] It is obtained by summing the single-year age-specific rates at a given time.
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It is a fact, independent of choice or ability. And why the quotes around the word demographics? I don’t think anyone else has used it . . . . .
