Sorting Things Out – Classification and its Consequences is a joy of a book, crammed with research and insights. It is very well written but is aimed at a serious academic audience, so pretty dense and packed with references. Bowker and Star examine in depth the development of the International Classification of Causes of Death, going back to 17th century archives and considering how something as apparently obvious and clearcut as death is in fact mired in political, religious, and economic biases. They go on to discuss the treatment of TB patients and the development of the Nursing Interventions Classification, again both of which would appear to be “objectively measurable” but are revealed to be complex intertwinings of various pressures. They then assess South Africa’s system of apartheid from the point of view of classification, showing how the arbitrary categorisation of people added to the brutality and cruelty of the regime. The book is not just a stark warning of how dominant regimes can use classification as a tool of oppression, but is also an important investigation of the powerplays involved in all categorisations.