What central banks can control is a base and one way they can control the base is via manipulating a particular interest rate, such as a Federal Funds rate, the overnight rate at which banks lend to one another. But they use that control to control what happens to the quantity of money. There is no disagreement.
Milton FriedmanMy major problem with the world is a problem of scarcity in the midst of plenty ... of people starving while there are unused resources ... people having skills which are not being used.
Milton FriedmanA minimum-wage law is, in reality, a law that makes it illegal for an employer to hire a person with limited skills.
Milton FriedmanThe collapse of communism in essence added tens and tens of millions of people to the world labor supply, and the people who were added had previously been getting very low income, but they were not unskilled. Many of them were fairly well educated.
Milton Friedman