A gradual refinement The steel rail is an artifact whose form has been carefully optimized. This gradual refinement of the design was done not by a single brilliant engineer but by more than a century of industrial evolution. The rail was never meant to be an object of beauty, but its cross section has all the elegance of fine typography. Brian Hayes, Infrastructure: A Guide to the Industrial Landscape elegancetypographytransportationevolutionchange
Welcome changing requirements Welcome changing requirements, even late in development. Agile processes harness change for the customer's competitive advantage. Manifesto for Agile Software Development A late change in requirements is a competitive advantage planning