. . "1945Z"^^ . . . . "David D. Friedman"@en . . . . "David Director Friedman (born February 12, 1945) is an American economist, physicist, legal scholar, and libertarian theorist. He is known for his writings in market anarchist theory, which is the subject of his most popular book, The Machinery of Freedom (1973, revised 1989 and 2014)."@en . "Economist, science fiction writer" . . "Friedman, David D."@en . "1945-02-12Z"^^ . . . . . . . . . .