The logic used to search for higher level functions. It is accomplished by selecting and inserting the initial basic function into each of the following three questions: (1) Why is it necessary to perform this function? (2) What higher level function caused this function to come into being? (3) What is really trying to be accomplished when this function is performed? When converted to functions, the answers to these questions always move one’s thinking to higher logic levels. The purpose of this exercise is to search for the real problem or areas that will yield the greatest creative results.
Bytheway, Charles. FAST Creativity & Innovation: Rapidly Improving Processes, Product Development and Solving Complex Problems . J. Ross Publishing. Kindle Edition.