FAST
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FAST Diagram as Defined in SAVE International®
What is FAST Diagram? A graphical representation of the dependent relationships of functions within a project, product, or process. The components of a FAST diagram consist of the scope lines; the labeled “How,” “Why,” “When,” and “Subject Scope” arrows; the classified functions, including basic functions, required secondary functions, secondary functions, unwanted secondary functions, higher-order functions,…
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Thought-Provoking Questions, Charles W. Bytheway
In essence, FAST is a method of stimulating organized thinking about any subject by asking thought-provoking questions. In these questions, the subject is expressed by a verb and a noun together with an occasional modifier. In Value Engineering terms, this verb and noun combination is called a function. As the answers are agreed upon, they…