1. Why not What: Chris Blattman posts notes from a recent talk he gave at DfID arguing that focusing too much on "what works?" is a mistake. Via Ryan Briggs on Twitter, here's Angus Deaton's 2010 paper making much the same argument.
2. Why not What, Part II: A new paper from Buera, Kaboski and Shin looks at a host of "well-identified evaluations of the impacts of micro-financial interventions" including the microcredit evaluations, the targeting the ultrapoor programs, and cash grants to try to understand why the results are what they are.
3. American Financial Security (or lack thereof): Americans confidence is their ability to afford retirement is creeping up again, but it's not clear why. A new HSBC study finds that 64% of respondents over age 70 are financially supporting others. Andrew Yarrow writes about "the 45%" who are paid less than $15/hour, are "asset poor" and do not have access to employer-sponsored retirement-savings (note that these are not all the same people).