I think a taught standard should conform to our natural experiences (in a perfect world of course). Seems like it did pretty good tho comparing trained to untrained listeners in Part 1. I think once we understand there is a slight difference in all of us, were better to understand other points of view. Even identical siamese twins, the closest production of the same individual that we know, still experience things differently and have different personality & tastes. Anyone ever thought about why that is? Usually the argument is nature versus nurture. Nature and nurture for siamese twins is about as close as it can get.