@SmartmanApps a thing she does very differently is, she tries to find and cite primary sources. A thing I strongly recommended to you since we started our former debate. A "cause I said so" or "I know this, trust me" reasoning simply is not very convincing.
Also the change CASIO did for the north american market was very interesting because it hints at something we also superficially discussed - regionally different interpretations (even if that just means "regionally taught wrongly").