Groups try out giving money directly to the needy to spend on community projects; others decry idea of experimenting with lives.
"Until pretty recently, the charity world has been about doing stuff that helps, without really asking: How much does it help exactly, and how much does it cost? But there does seem to be this shift that's starting to happen. Philanthropy is getting nerdier; people are paying more attention to data." -- David Kestenbaum and Jacob Goldstein, NPR.org
