Look how you can encourage people to make smart kids. You take a sample of people. Large one. Smart people. And see their parents qualities and properties. And calculate wich gene (people combination) give genius,smart,average and idiot kids. Then just promote this as a way for parents that wish to have smart kids. Also is said is best to make logic exercises before making sex and make a kid. Because of epigenom. Intelectual effort modelate epigenom wich makes kids the way you want