This document summarizes Michael Root's review of Sally Haslanger's book "Resisting Reality: Social Construction and Social Critique". The review discusses how Haslanger argues that gender and race are socially constructed categories that systematically disadvantage and subordinate some groups. While gender and race are real and have material consequences, their meanings are defined by social norms and power structures rather than biology. Haslanger uses semantic externalism to argue that the meanings of terms like "man", "woman", "Black", and "White" are determined by experts, not ordinary usage or intuitions.