Technology Readiness Levels (TRL)

Most every new innovative idea has a fuzzy front-end. The idea may have potential, at least in someone's mind, but it also likely has "holes" in it.  Will it really work? What about this, what about that?
If we were to score this new idea, from 0 to 9, where would it be? Turns out, NASA and the European Commission created a well-vetted method for scoring new ideas based on the stage of technological progress ... 0 being conceptual, 9 meaning the idea is out there and doing well in the world.