The Evolution of Useful Things A Book by Henry Petroski Here, then, is the central idea: the form of made things is always subject to change in response to their real or perceived shortcomings, their failures to function properly. This principle governs all invention, innovation, ingenuity. Spike and sponShaped and reshapedForm follows failureTheir wrongness is somehow more immediateA small corner of the world of things+23 More The evolution of devices formfunctioninventionprogressfailure
197. Thick Walls Problem Houses with smooth hard walls made of prefabricated panels, concrete, gypsum, steel, aluminum, or glass always stay impersonal and dead. Solution Open your mind to the possibility that the walls of your building can be thick, can occupy a substantial volume—even actual usable space—and need not be merely thin membranes which have no depth. Decide where these thick walls ought to be. Christopher Alexander, Murray Silverstein & Sara Ishikawa, A Pattern Language Zeniba's house