Traditional paternalists argue that they know what's good for you regardless of your own preferences. Prohibition advocates, for example, claimed that people must be forced to stay away from "Demon Rum"
Unlike old-fashioned paternalists, advocates of LP argue that choice must sometimes be restricted in order to enable people to better pursue their own "true" preferences—to do what they themselves would want to do, but for the pernicious influence of ignorance and cognitive biases. LP enthusiasts also contend that policymakers can simultaneously improve decision-making and minimize coercion by using carefully calibrated "nudges" rather than the crude blunderbuss tactics of "hard" paternalists. For their part, critics claim that the behaviorial research underlying LP isn't as robust as advocates assert, and that the new paternalistic policies have many of the same flaws as the old.
Two recently published books suggest that there may be more room for common ground between defenders and critics of LP than previously assumed. The first is Too Much Information: Understanding What You Don't Want to Know by Harvard law professor Cass Sunstein, one of the leading advocates of LP. The second, Escaping Paternalism: Rationality, Behavioral Economics, and Public Policy, by economists Mario Rizzo and Glen Whitman (RW), perhaps the leading academic critics of LP. Sunstein and RW are longtime adversaries in the academic debate over paternalism. But these two books have so much in common that readers unfamiliar with the authors' history might assume they are all on the same side.
Source: Reason