 As to creative thinking, it overlaps with critical thinking (Bailin 1987, 1988). Thinking about the explanation of some phenomenon or event, as in  Ferryboat,  requires creative imagination in constructing plausible explanatory hypotheses. Likewise, thinking about a policy question, as in  Candidate,  requires creativity in coming up with options. Conversely, creativity in any field needs to be balanced by critical appraisal of the draft painting or novel or mathematical theory.