From the Lean Lexicon
Set-Based Concurrent Engineering
An approach to the design of products and services in which developers consider sets of ideas rather than single ideas. To do this, developers: • Use trade-off curves and design guidelines to characterize (or describe) known feasible design sets, and thus focus the search for designs.• Identify and develop multiple alternatives, and eliminate alternatives only when proven inferior or infeasible. • Start with design targets, and allow the actual specifications and tolerances to emerge through analysis and testing. • Delay selecting the final design or establishing the final specifications until the team knows enough to make a good decision. This approach yields substantial organizational learning. It takes less time and costs less in the long term than typical point-based engineering systems that select a design solution early in the development process, with the typical consequence of false starts, rework, failed projects, and minimal learning.
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