Even when they are trying to see centers, they often fail to see them all, and are not able to grasp how many centers there are in the design, how densely packed with centers it is.
Small world networks? No, this is from Christopher Alexander’s A Foreshadowing of 21st Century Art: The Color and Geometry of Very Early Turkish Carpets. [NY: Oxford University Press. ISBN 0-19-520866-8], which I admit I haven’t read, and at the price, am unlikely to purchase. However, read a review to pick up some of the ideas. Stephen points out that his four-volume The Nature of Order is now in print.