[Broken_Hippo]

Perhaps change such a stipend to include comprehensive health care and actual education instead of just data.

Comprehensive health care, including birth control, tends to produce smaller families. Elder care would already be included with the food, shelter, and clothing portion of the stipend - so having someone to take care of you isn't a concern. Nor is having children to work in your factory or farm. Teach folks how to avoid having children: Teach them what to do if they want to have children. Teach them about child-rearing, teach them facts showing how spacing apart children makes for healthier children. Make sure to teach all this to both men and women, on top of other things.

The best part about these sort of things is that they tend to work, even in populations that traditionally have large families. The fact that these sorts of things tend to work alleviates my own personal fear of the population doubling and then doubling again. Some forms of religion might prove to be a difficult group at first, but I think that will be a small enough minority to not worry too much about it.