The answer is HI-SHIRYO, non-thinking.
Bodily full lotus sitting, dumbly squashing a black sitting-cushion, is non-thinking.
Mental full lotus sitting, thinking ears and shoulders apart, thinking nose and navel apart, making a mental decision not to do, is non-thinking.
Body and mind dropping off, losing the self just in sitting itself, is non-thinking.
Birdsong bouncing around spacetime is non-thinking.
For 750 years between Master Dogen's writing of Shobobenzo chapter 72, Zanmai-o-zanmai, and the existence in the world of my problem-solving ability, nobody has clearly understood the above.
I have tried to clarify the above to my teacher Gudo Nishijima, but weighed down by his wrong view about the autonomic nervous system, he has not been able to understand. Rather, he has responded to my efforts by violating the Dharma without reason, and causing himself and others to slander me, willy-nilly.
How can I say such a thing? asks Plato. I can say such a thing, Plato, by not worrying about being right or being wrong, by not bothering about being humble or being arrogant, loyal or disloyal. I can say such a thing because it is true.
Moreover, saying it seems to have caused my stomach pains to disappear -- after I posted the previous post, and gave up trying to deny the bald fact that my teacher seriously violated the Dharma, my stomach stopped hurting.
For nearly four weeks now I have been in France devoting the time to full lotus sitting. So far, I am sorry, but in the way of a conclusion this is the best I can do.