How can we build systems that are easily changeable when requirements are unclear at project start?

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• We want to build systems which can be enhanced and modified in a piecemeal fashion. This is necessary because the requirements for systems inevitably change, sometimes even before they are deployed for the very first time.quote0.849
  Opening statement of the GARDEN OF APPLICATIONS pattern, articulating the core force.
• How can systems accommodate change without abandoning them mid-development?question0.785
• "Systems do not necessarily require master plans in order for development to begin. With the proper meta-constructs in place, their development can proceed in an almost 'organic' fashion."concept0.766
  Core assertion that piecemeal growth with meta-constructs removes the need for upfront complete plans.
• Everything should be made as simple as possible, but not simpler.quote0.763
  Einstein's assertion invoked to explain why BMR preserves accuracy while reducing complexity
• It is inherently impossible to make a successful building by mass production or prefabrication without possibility of modification.claim0.757
  Necessary minute adaptations cannot be achieved with standardized components.
• In modern architecture, neither design nor construction typically works step by step; instead there is a fixed end-state produced without realistic feedback.claim0.755
  Contrast between living process and current architectural practice.
• When a problem has a simple solution, a useful system will give programmers access to the simple solution; Parlog forces complex solutions to simple problems.claim0.753
  Critique that Parlog's abstraction level is too high and restrictive.
• Proving that a program meets accomplishment specifications must be based on assumptions about the world, the information it makes available to the program and the effects of the program's actions as well as on facts about the program itself.claim0.752
  Claim about the nature of accomplishment verification.