Friedman was a professional economist all his life. His most famous area was on monetary policy which was very politically important in that era of hyperinflati

Friedman was a professional economist all his life. His most famous area was on monetary policy which was very politically important in that era of hyperinflation disasters. But, economics bleeds into political science readily. Marx was an economist. Hayek (mentioned in the article) is most famous for political pamphleteering, but he was certainly an economist too. Both he and Friedman got the nobel prize for their economics. Neoliberalism is very much an economics-politics hybrid movement.