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Identifying design problems, and solving them as early in the design cycle as possible, is the key to keeping projects on time and within budget. Too often, [[product design]] and performance problems are not detected until late in the [[product development]] cycle — when the product is ready to be shipped. The old adage holds true: It costs a [[Penny (United States coin)|penny]] to make a change in engineering, a [[Dime (United States coin)|dime]] in production and a [[United States dollar|dollar]] after a product is in the field.
==Prototyping==
In the [[Prototyping]] stage, engineers create actual working samples of the product they plan to produce. Engineering Verification Testing (EVT) <!-- see talk page --> is used on prototypes to verify that the design meets pre-determined specifications and design goals. This valuable information is used to validate the design as is, or identify areas that need to be modified.
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* Safety certification
==Design refinement==
After prototyping, the product is moved to the next phase of the design cycle: Design Refinement. Engineers revise and improve the design to meet performance and design requirements and specifications. Design Verification Testing is performed to deliver objective, comprehensive testing verifying all product specifications, interface standards, OEM requirements, and diagnostic commands.
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