The term was popularized by Naomi Klein. In her 2007 book "The Shock Doctrine", she argues that neoliberal free market policies (as advocated by the economist Milton Friedman) have risen to prominence globally because of a strategy of "shock therapy".. She argues these policies are often unpopular, result in greater inequality and are accompanied by political and social "shocks" such as military coups, state sponsored terror, sudden unemployment and the suppression of labor. Johan Norberg of the Cato Institute criticized the book, saying that the concept of shock therapy is falsely attributed to Friedman. According to Norberg, Friedman's quote ("Only a crisis—actual or perceived—produces real change") is taken out of context and misinterpreted. Klein's response argues that Norberg is "vastly inflating the role I attribute to Milton Friedman."