Ha-Joon Chang
Ha-Joon Chang is a South Korean economist known for his work on development economics and his critique of free-market policies.
"A lot of things that we cannot buy and sell in markets used to be totally legal objects of market exchange - human beings when we had slavery, child labour, human organs, and so on. So there is no economic theory that actually says that you shouldn't have slavery or child labour because all these are political, ethical judgments."