Besides that being the most perfect and practical explanation of consumer perception of audio, I love your mention of "static".
"Static" is a word that has changed meaning... totally... in recent decades. Static is originally analog noise caused by atmospheric conditions like lightening and it affected AM alone. FM, at its introduction, was promoted as having "no static".
Today, "static" is any kind of noise or interference with a clean radio signal.
And this is just a reminder of how words change... just as in our industry we can now call "radio" any kind of audio service that does not have an an accompanying picture.
