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
Requirements proliferation Any attempt to formulate all possible requirements at the start of a project will fail and would cause considerable delays. — Pahl and Beitz, Engineering Design As Project Manager, I had to reject the requirements document as totally impractical, and have a quite small team of architects, marketers, and implementers extract the essence. Requirements proliferation must be fought, by both birth control and infanticide. Frederick P. Brooks, Jr., The Design of Design YagniA grossly obese set of requirementsFeatures and complexity features