Educated people voluntarily choosing to have fewer children is an important effect in the short term. In the long term, sub-populations which choose to have mo

Educated people voluntarily choosing to have fewer children is an important effect in the short term. In the long term, sub-populations which choose to have more children will outgrow sub-populations which have fewer children. Until the growth is eventually stopped by external factors, like limited resources, famine, war, or strictly enforced government policies.