7 came to mind with your posting regarding that interesting biological experiment using 7hz. Your recall with images still amazes me!
The dam is a beautiful analogy that fit precisely. Imagine chipping away at the dam and then finally a crack appears and the 'waters' trickle out at first, then in what seems like a cascading avalanche the crack turns into a gap then a major opening that progressively reduces the damn to nothing more than a few small pieces scattered along the river.
That is what cognitive behavior therapy is like.
A good book find the previous night:
Nature's harmonic unity: a treatise on its relation to proportional form : Samuel Colman, Clarence Arthur Coan










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