Complex systems

Social ensembles are often said to be "complex". What does this mean? Herbert Simon is one of the seminal thinkers in the study of complexity. His 1962 article, "The Architecture of Complexity" (link), put forward several ideas that have become core to the conceptual frameworks of people who now study social complexity. So it is …

Revisiting Popper

Karl Popper's most commonly cited contribution to philosophy and the philosophy of science is his theory of falsifiability (The Logic of Scientific Discovery, Conjectures and Refutations: The Growth of Scientific Knowledge). (Stephen Thornton has a very nice essay on Popper's philosophy in the Stanford Encyclopedia of Philosophy.) In its essence, this theory is an alternative …

Policy, treatment, and mechanism

Policies are selected in order to bring about some desired social outcome or to prevent an undesired one. Medical treatments are applied in order to cure a disease or to ameliorate its effects. In each case an intervention is performed in the belief that this intervention will causally interact with a larger system in such …

Composition of the social

Our social ontology needs to reflect the insight that complex social happenings are almost invariably composed of multiple causal processes rather than existing as unitary systems. The phenomena of a great social whole -- a city over a fifty-year span, a period of sustained social upheaval or revolution (Iran in the 1970s-1980s), an international trading …

Heterogeneity of the social

I think heterogeneity is a very basic characteristic of the domain of the social. And I think this makes a big difference for how we should attempt to study the social world "scientifically". What sorts of things am I thinking about here? Let's start with some semantics. A heterogeneous group of things is the contrary …

Agent-based modeling as social explanation

Logical positivism favored a theory of scientific explanation that focused on subsumption under general laws. We explain an outcome by identifying one or more general laws, a set of boundary conditions, and a derivation of the outcome from these statements. A second and competing theory of scientific explanation can be called "causal realism." On this …