She explains the fraction ball covering method that is popular in snooker with a little Back of the Ball thrown in and falls back on good old Ghost Ball at the end to explain the concept to beginners.
Perfect for you Duckie. You should send her an "Arrow".
The BAT is another of the plethora of GB devices out there. Very useful for beginners. More advanced players prefer to graduate from GB.
Just remember: Those who can do 'do' and those who can't do teach. What a condescending post! I just couldn't believe my eyes. And don't try and put lipstick on this pig (your post).