So there is an advert for Coke, staring Tiger Woods, and he goes 'yum, I like coca cola, its so tasty, it makes me play golf really good, stay in school kids and eat your greens'
Now, noone in the world doesn't already know what coke tastes like. Noone in the world is unaware of coke.
Everyone knows about it, everyone has tasted it, everyone knows if they like it or not.
If you want to drink some coke, you get some, if you don't, you don't.
Noone is going to go - wow, whats this new 'coca cola' drink then? I'll have to get me some of that.
Noone thinks - well I have heard tell of this fizzy pop stuff, but I've never taken the plunge and actually drank some, and now, after what that golf man said, I think I just might! I'm amazing! High five!
So, everyone already has a position on the whole coke thing, and unless you are completely insane you would only drink it when you want to drink it, not because Tiger ****ing Woods pretends to.
Brand awareness? You can't not be aware of it. If I see 100 adverts for coke every day, or none for a decade, my ability to remember that coke exists doesn't change, because I'm not a goldfish.
So what's the point of advertising it? There must be a few smug, swagering, blokey PR types who can explain.