[Jabanga]

1. You wrote in your previous comment: " A study suggesting that increased access to education, or welfare in general, increases the birth rate among the poor?"

2. The fact that an increasing number of people are having children out of wedlock should be very concerning. Many social problems are strongly correlated with high single parenthood rates. The evidence suggests to me that more welfare encourages single parenthood by changing its costs/rewards.

3. Even that finding is shocking in how anti-welfare it is, given the well-documented leftist bias in the social sciences. Even accepting it at face value, it points to a definite negative effect. Over time, it could get worse due to natural selection.

4. I can do some research and see what I find. As for human populations, I think the most likely outcome is that they inevitably reach a state of evolutionary optimal behavior.