Leo Bogart (1921 in Poland – October 15, 2005 in New York)[1] was an American sociologist and media and marketing expert. (wikipedia)
The Great Idea in advertising is far more than the sum of the recognition scores, the ratings and all the other superficial indicators of its success; it is in the realm of myth, to which measurements cannot apply.
In my opinion, fun is what makes advertising successful.
Advertisements may be evaluated scientifically; they cannot be created scientifically.