Libertarian paternalism way that will make choosers better off, as judged by themselves" (p. 5); note and consider, the concept paternalism specifically requires a restriction of choice. It is libertarian in the sense that it aims to ensure that "people should be free to opt out of specified arrangements if they choose to do so" (p. 1161). The possibility to opt-out is said to "preserve freedom of choice" (p. 1182). Thaler and Sunstein published "Nudge", a book-length defense of this political doctrine, in 2008 (new edition 2009). Libertarian paternalism is similar to asymmetric paternalism, which refers to policies designed to help people
The Undoing Project Project" was met largely by rave reviews, with Glenn C. Altschuler arguing in the "Pittsburgh Post-Gazette" that it "may well be his best book." Writing in "The New Yorker", law professor Cass Sunstein and economist Richard Thaler praised the book's ability to explain complex concepts to lay readers as well as turn the biographies of Tversky and Kahneman into a page-turner: "He provides a basic primer on the research of Kahneman and Tversky, but almost in passing; what is of interest here is the collaboration between two scientists." Jennifer Senior of "The New York Times" wrote that "At its peak,