The spatial dimension of democracy Since the time of the Greeks, democracy has been understood to have a spatial dimension and so, by extension, an element of scale. Plato measured the polis, the unit of democratic citizenship, at five hundred citizens, an extremely tractable size for a community that seeks to express itself through direct engagement. Michael Sorkin, 20 Minutes in Manhattan democracypoliticscommunity
What kind of world it's going to be The wonderful thing about living in a world of our own creation is that we get to choose what kind of world it's going to be—at least in principle. But the promise is meaningful only if a broad enough "we" can be engaged in the process. At present, mechanisms and democratic institutions for making collective decisions about the deployment of technology are hopelessly cumbersome. How can anyone make a sensible choice without being able to weigh one alternative against another? Brian Hayes, Infrastructure: A Guide to the Industrial Landscape democracypoliticsclimatechoice
Caustic (optics) Caustics made by the surface of water. In optics, a caustic is the envelope of light rays reflected or refracted by a curved surface or object, or the projection of that envelope of rays on another surface. The caustic is a curve or surface to which each of the light rays is tangent, defining a boundary of an envelope of rays as a curve of concentrated light. Wikipedia en.wikipedia.org Architectural CausticsCaustic Engineering caustics