Actually, it's back to the subject of disability: Getting children to conform is dependent, as far as I can tell, on getting all the consonances to be predictable and, if that can't be managed, to line up neutral beats so that no definitions are subject to challenge. (As I reread that statement I realize that I wrote it in relation to music, but it might as easily apply to life in general.)
My severely challenged student who last week slowed himself down to achieve a bi-lateral coordination, yesterday did something even more difficult by producing the same coordination with the left hand playing the "same" pattern but in two different keys, thus completely upsetting whatever arrangement of consonance and dissonance he had become accustomed to in the first tonality.
He could do it. Every musician knows how hard this is.
