That is exactly correct -- but prior to reading the article, I didn't think about the idea, I didn't wrap my mind around it -- until I saw the article -- someti

That is exactly correct -- but prior to reading the article, I didn't think about the idea, I didn't wrap my mind around it -- until I saw the article -- sometimes a color graphic image has a way of educating the mind intuitively -- that a textbook filled with mere black and white text, mere words, does not... It's a simple idea, to be sure... ...but sometimes the simplest ideas -- are the most elegant and powerful in their simplicity! But yes, you are exactly correct!