There is a seductive appeal to the idea of a "generative social science". Joshua Epstein is one of the main proponents of the idea, most especially in his book, Generative Social Science: Studies in Agent-Based Computational Modeling. The central tool of generative social science is the construction of an agent-based model (link). The ABM is said …
Coarse-graining of complex systems
The question of the relationship between micro-level and macro-level is just as important in physics as it is in sociology. Is it possible to derive the macro-states of a system from information about the micro-states of the system? It turns out that there are some surprising aspects of the relationship between micro and macro that …
Phase transitions and emergence
Image: Phase diagram of water, Solé. Phase Transitions, 4 I've proposed to understand the concepts of emergence and generativeness as being symmetrical (link). Generative higher-level properties are those that those that can be calculated or inferred based on information about the properties and states of the micro-components. Emergent properties are properties of an ensemble that have …
What is anchor individualism?
Brian Epstein has attempted to shake up some of our fundamental assumptions about the social world in the past several years by challenging the idea of "ontological individualism" -- the idea that social things consist of facts about individuals in action, thought, and interaction, and nothing else. Here is how he puts the idea in …
Non-generative social facts
Is every social process generated by facts about individuals? For example, consider a television advertising campaign for a General Motors truck. This is a complicated sequence of events, actions, contracts, relationships, and interactions among organizational units as well as individuals. The campaign itself is constituted by the schedule of television spots on which the adverts are …
Reduction and generativeness
Providing an ontology of complex entities seems to force us to refer to some notion of higher-level and lower-level things. Proteins consist of atoms; atoms consist of protons, electrons, and neutrons; and cells are agglomerations of many things, including proteins. This describes a relation ofcomposition between a set of lower-level things and the higher-level thing. …
Reduction and generativeness
Providing an ontology of complex entities seems to force us to refer to some notion of higher-level and lower-level things. Proteins consist of atoms; atoms consist of protons, electrons, and neutrons; and cells are agglomerations of many things, including proteins. This describes a relation of composition between a set of lower-level things and the higher-level …
Are emergence and microfoundations contraries?
image: micro-structure of a nanomaterial (link) Are there strong logical relationships among the ideas of emergence, microfoundations, generative dependency, and supervenience? It appears that there are. The diagram represents the social world as a laminated set of layers of entities, processes, powers, and laws. Entities at L2 are composed of or caused by some set …
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Do we still need microfoundations?
For quite a few years I have found the concept of microfoundations to be central for thinking about relationships across levels of social and individual activity. Succinctly, I have argued that, while it is perfectly legitimate to formulate theories and hypotheses about the properties and causal powers of higher-level social entities, it is necessary that …
Microfoundations and causal powers
Image: Three Mile Island control room There isn't a lot of cross-over between the microfoundations literature (Peter Hedstrom, Dissecting the Social: On the Principles of Analytical Sociology) and the causal-powers literature (Greco and Groff, Powers and Capacities in Philosophy: The New Aristotelianism). People who advocate the importance of microfoundations in the social sciences are usually …
Understanding Society 