some detail, along with other important factors, such as private patronage from wealthy figures who were unhealthily obsessed with the hypothetical phenom-enon of antigravity. The renaissance of general relativity rovides a rich case study for thinking about fundamental problems of scien-tific change. How are theories used and not used? What is the difference between healthy and withering research pro-grams? Can the resurgence of a heory be explained by new observational discov-eries? Technological advances? Individ-ual personalities? Social and political de-velopments? The book is a great cross section of those different approaches, which will make it valuable to scholars in history and sociology of physics—although it might set a fairly high methodological barrier to entry for non-specialist readers. Nevertheless, The Re – naissance of General Relativity in Context will ickly become a classic in the his-tory of the field, and it will perhaps spur new research programs of its own.