Ο Krugman σε μια εύστοχη ανάρτησή του τονίζει ότι η οικονομική επιστήμη δεν είναι ένα παιχνίδι ηθικής:
"...economics is not a morality play. It’s not a happy story in which virtue is rewarded and vice punished. The market economy is a system for organizing activity — a pretty good system most of the time, though not always — with no special moral significance. The rich don’t necessarily deserve their wealth, and the poor certainly don’t deserve their poverty; nonetheless, we accept a system with considerable inequality because systems without any inequality don’t work. And before the trolls jump in to say aha, Krugman concedes the truth of supply-side economics, that’s not an argument against progressive taxation and the welfare state; it’s just an argument that says that there are limits. Cuba doesn’t work; Sweden works pretty well."
