2.4 Phases of Concept Generation
To specify what concept generation is, we classify the process of concept generation into two phases—the problem–driven phase and inner sense–driven phase—according to the following two factors: the basis of the concept generation and ability which enables the concept generation to proceed. These factors are related to the following questions, respectively: (1) From where is a new concept generated? and (2) What enables a designer to promote the process to generate a new concept?