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
By the handling of human hands This type of beauty grows with each passing day. Utilitarian craftwares become more beautiful the more they are used, and the more beautiful they become, the more they are used. Moreover, the heavens have ordained that these objects should attain an even greater beauty as they become worn by the handling of human hands. Yanagi Sōetsu, The Beauty of Miscellaneous Things Putting Thought Into Things utility