Arnold Kling is just so consistently excellent. He proposes a benign explanation for the "increase in income inequality" that is alarming certain folks.
And, in an older article, he torches the "happiness research" that is often advanced to further a pro-interventionist agenda.
I am afraid that "happiness research" amounts to nothing but a flimsy excuse for left-wing academics to claim that they should be given control over how the rest of us live.
Let me offer a final thought experiment. Suppose that you could choose to live either in our society with its current choice of lifestyles or in a society where "happiness police" tell you how many hours you can work, what kind of job you can have, and what kinds of goods and services you can buy. Which society would make you happier?