“For the creativity of its design, the importance of its subject matter, and the depth of its analysis, Learning While Governing is sure to make a splash in the discipline. Pairing formal theory with American political development, Sean Gailmard and John W. Patty dish up a rich array of insights into the development of policy expertise within the executive branch. Most importantly, they show that the development and transmittal of expertise is unavoidably haphazard, as the institutional solutions to some problems of governance unavoidably exacerbate others.”