People living in Kenya on 65 cents a day is a completely different situation than, say, a homeless person in San Francisco.
I applaud the emphasis on data, but I'd be really careful with painting this issue with a broad brush. If anything, the roadways are littered with the corpses of programs that tried applying simplistic ideas too broadly. You also want to make sure you are measuring something that actually means something and not just something that's easy to measure.