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Self-organization in Science and Society: an introduction What is STS? • Usually we think about science having impact on society: eg cars and sex in 1950s • But society has an impact on science: eg the global warming “debate” was largely the creation of oil company funding (cf. http://www.ucsusa.org/publications/catalys t/exxon-exposed.html • The impact can also be good (as we will soon see) • Nature is also in this dielectic: so… What is STS? The trielectic: What isn’t selforganization? What is selforganization? Top-down: someone in charge organizes stuff Bottom-up: the stuff organizes itself: Military—general, commander Biological evolution Corporation—CEO Catholic church—Pope Flocks and swarms: bees, birds, whales, wolves, etc. Suburban layout—architect Automotive design—designer Crowdsourcing: WWW, Wikipedia, Computer chip--engineer Open Source, etc. Fine art—artist Orchestra-conductor Subsumption architecture (robotics), Molecular self-assembly (nano), Why do dictatorships love linear order? Why do dictatorships love linear order? Why do democracies accept disorder? What about in-between? top-down bottom-up •This spectrum exists for many other systems: eg human nervous system combines centralization (brain vs peripheral ns) with self-organization (neural nets) •Note that thinking about social structures can help us think about natural structures How disorganized can self-organization be? Toss a handful of particles in the air: “self-organized” but without order. Trival case Sand waves from wind action: a quasi-ordered emergent pattern. Significant case. Salt crystal forms from evaporating water. Completely ordered. Trivial case. Self-organization tends to be a more salient description when describing systems between total order and total disorder Top-down tools Bottom-up tools Tool Linear Non-linear Spatial analysis Euclidean geometry Fractal geometry Dynamics Newtonian mechanics Chaos theory Collective behavior Statistics Complexity theory Top-down tools Bottom-up tools Tool Linear Non-linear Communication Shannon-weaver (classical information theory) Network theory (scale-free topologies) Optimization Operations research (linear programming etc.) Fitness landscape, genetic algorithms Artificial Intelligence GOFAI (Expert systems, high level symbol manipulation) Neuromimetics, subsumption architecture, etc. Most theories of self-organizing systems fall under the rubric of “Complexity Theory.” But what is the distinction between Complexity Theory and Theorizing Things that are Complicated? Which is more complex? • A gas made of 15 million molecules randomly crashing about? OR • A school made of 15 fish gracefully swirling though water? Emergence is global behavior of a system resulting from collective interactions of loosely coupled components. Temperature: an emergent property of swarms of molecules. But temperature is based on the average velocity of molecules (E=3kT/2). Linear relation, you can use statistics. Flocking: an emergent property of swarms of animals (birds, ants, fish, etc.). Flock movements are not well characterized by averages or statistics. They are nonlinear, adaptive, anticipative, have memory. They have synergy: the whole is greater than the parts. “Complicated” just means there is so much going on we can’t keep track of it Complexity: synergistic emergent behavior; often adaptive (hence “complex adaptive systems”). But we can go even deeper • At the heart of self-organization lies recursion • Recursion is also at the heart of many social ideals: democracy, freedom, egalitarianism. • Therefore it should be no surprise that some of the founders of self-organization in science were also activists for self-organization in society.