The great thing about these experiments and other experiments in the realm of behavior economics is that that they gather real data about how humans actually be

The great thing about these experiments and other experiments in the realm of behavior economics is that that they gather real data about how humans actually behave, rather than the traditional underpinnings of economics and philosophy which are basically, "I really want to believe this is is true, so I'll write a book about it, and then then in the 20th century gussy it up with some straight line graphs." So, people aren't strictly rational actors, and altruism is inherent and beneficial. Which isn't exactly surprising. However I don't hold out hope for evidence-based science to central to socio-economic policy, since it would force wide swaths of the population to give up thier cherished beliefs about how they wish the world works, and instead embrace how the world actually does.