David Director Friedman (born February 12, 1945) is an American economist, physicist, legal scholar, and anarcho-capitalist theorist.

[independent source needed] Although his academic training was in chemistry and physics and not law or economics, he is known for his textbook writings on microeconomics and the libertarian theory of anarcho-capitalism, which is the subject of his most popular book, The Machinery of Freedom.

[citation needed] In his book The Machinery of Freedom (1973), Friedman sketched a form of anarcho-capitalism where all goods and services including law itself can be produced by the free market.

He is known throughout the worldwide society for his articles on the philosophy of recreationism and practical historical recreations, especially those relating to the medieval Middle East.

[16] Radey relates how Friedman and himself wrote to Charles S. Roberts claiming that they had found a first turn winning strategy for each of the two sides.