<p>First published in 1984 this is a study of categorization practices: how people categorize each other and their actions; how they describe infer and judge. The book presents a sociological analysis and description of practical activities and makes a cogent contribution to the study of how the moral order actually works in practical communicative contexts. Among the issues dealt with are: collectivity categorizations the organization of lists and descriptions moral attribution and inferences and the relationship between standards of morality and standards of rationality. </p>