Impromptu? The Goldilocks Problem

This is a question people often wonder, pushing back against improv’s claim of being composed in the moment of presentation. Then there are those who object that this or that improv is too improvised, too formless, lacking art. Such objections put me in mind of old Miss Goldilocks’s quest of the just right porridge, chair, and bed. Isn’t all writing and creativity a spontaneous act to some degree? Isn’t all writing and creativity a premeditated act to some degree?