Question: Which American economist, winner of the 1976 Nobel Memorial Prize in Economic Sciences, wrote the introduction for the 1996 reprint of "I, Pencil"?
Sentence (from "I, Pencil"): Friedman (the 1976 winner of the Nobel Prize in Economics) used the essay in his 1980 PBS television show "Free to Choose" and the accompanying book of the same name.
Relevant evidence: No