Congratulations are due to Mr. Zuckerberg and Dr. Chan on the birth of their child and the launch of their alternative model for philanthropic investment, but I am less willing than Professor Lenkowsky to completely throw the rich history, diversity, and success of American philanthropic traditions under the bus http://www.wsj.com/articles/ending-philanthropy-as-we-know-it-1449100975 . Only time will tell if the Zuckerberg-Chan approach is “ending philanthropy as we know it.” Like all social systems, strategic philanthropy should be challenged, questioned and perturbed less it grow to complacent in its responsibility to serve as a source of venture capital for public good. The more experiments we are able to run, the more models we can test, and the more innovation that is trialed the better the “independent sector” is likely to achieve its goals. Philanthropy should remain a vibrant laboratory with room for experiments continually evaluating how best to use individual generosity and decision-making to solve important problems. Still, however exciting experiments appear, success requires more than assertions. Successful outcomes can only be determined on the basis of data, analysis, and results.