This article from Vox (3.16.15) is an excellent review of the inability of"poor kids to get ahead in the US--both because of the unfairness of having one's life outcome determined at birth and because denying children opportunities on the basis of income risks making society as a whole worse off. Poor kids, through no fault of their own are less prepared by their families, their schools and their communities to develop their God-given talents as fully as rich kids…" http://www.vox.com/2015/3/16/8225165/patents-innovation-social-mobility