And don't take my claim too strong, here. I obviously don't /know/. I have some strong doubts, sure; but doubts are not themselves evidence against. Your very point on weights not absolutely working is essentially my point.
I bring in consciousness, as that is what it sounds like when you say that one needs to think on something. Consciously and deliberately. Otherwise, I can think a lot on a program I'm wanting to write, but make zero progress on it.