generative metaphor

A term introduced by Schon.   A generative metaphor is an implicit metaphor that can cast a kind of spell on a community.  All solutions are understood in terms of the implicit metaphor.  "Under the spell of metaphor, it appears obvious that [one thing or another] is bad and [the other] is good." Schon, p. 255.   If someone can introduce a new generative metaphor, new solutions can be found.