This review suggests that the sociology of intellectuals is being converted into a sociology of interventions, i.e., instead of focusing on a certain social type, it analyzes the movement by which knowledge and expertise are mobilized to inform a value-laden intervention in the public sphere. We first demonstrate that the classical sociology of intellectuals was centered on a problematic of allegiance that no longer seems productive. In addition, we show that by focusing on a particular social type it remained limited to only one mode of intervention into the public sphere.We then review two literatures that distance themselves from the classical problematic and that could be integrated under the common rubric of a sociology of intervention...