At least two views of design activity are in step with the action-centric perspective. Both involve three ordinary activities.
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A design process is a general philosophy that could or may not incorporate a aid for particular methods. Some are to guide the final target of the design. Different procedures are to steer the traits of the designer.
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In the reflection-in-action paradigm, designers exchange between "framing", "making moves", and "evaluating moves". "Framing" refers to conceptualizing the problem, i.e., defining goals and objectives. A "move" is a tentative design decision. The evaluation approach could result in further moves within the design.
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The rational model was independently developed by Herbert A. Simon,[8][9] an American scientist, and two German engineering design theorists, Gerhard Pahl and Wolfgang Beitz
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In the sensemaking–coevolution–implementation framework, designers trade among its 3 titular activities. Sensemaking involves the two framing and evaluating moves. Implementation is the process of constructing the layout object. Coevolution is "the procedure in which the design agent simultaneously refines its intellectual image of the design object in keeping with its mental photograph of the context, and vice versa"