I remember my Dad, telling me about that card system as he was in University of London doing pharmacy in the '30's, and I thought, at the time he told me, that he was talking rubbish, sorry Dad! A precursor, I assume, of the far more complicated diagnostic triangle that I was supposed to learn as a Dental Student in the 1970's.

I must find the BIAB file of the song I wrote in the 70's that when I put the chords in BIAB, (gossamer sty)and randomly generated a melody, produced, at the 1st generation, an almost note for note version of MY melody/me singing. One of the many many reasons I like BIAB!!!

However Artificial Intelligence is no match for Natural Stupidity.