Understanding Society is an academic blog by Daniel Little that explores a series of topics in the philosophy of social science and the workings of the social world. Published continuously since 2007, the blog has treated a wide range of topics, from the nature of causal mechanisms to the idea of emergence to the political dynamics of right-wing extremism to the causes of large-scale technological disaster. Readers should consider the blog an example of “open-source philosophy”. It is an experiment in thinking, one idea at a time.