 In a society where guarding children is the primary female duty and trading in a market economy is the primary male duty, Lakoff posits that children assign the 'guardian' and 'trader' roles to their mothers and fathers, respectively.Lakoff, Johnson, and Pinker are among the many cognitive scientists that devote a significant amount of time to current events and political theory, suggesting that respected linguists and theorists of conceptual metaphor may tend to channel their theories into political realms.Critics of this ethics-driven approach to language tend to accept that idioms reflect underlying conceptual metaphors, but that actual grammar, and the more basic cross-cultural concepts of scientific method and mathematical practice tend to minimize the impact of metaphors.