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
The preliminary sketch Among the best woodblock prints are many that seem not to have adhered strictly to the preliminary sketch. The sketch simply indicated a general direction, and in many cases was not used at all. Or it was even improved upon in the process of carving and brought vividly to life; the woodblock qualities of the print were accentuated and highlighted. Yanagi Sōetsu, Woodblock Prints BlueprintsHead and hand drawing