Advertising is, actually, a simple phenomenon in terms of economics. It is merely a substitute for a personal sales force - an extension, if you will, of the merchant who cries aloud his wares.
Rosser ReevesBrand-image campaigns establish contact with the subconscious of the consumer below the word level. They do this with visual symbols instead of words, Mr. Martineau says, because the visual symbols are far more significant. They communicate faster. They are more direct. There is no work, no mental effort. Their sole purpose is to create images and moods.
Rosser Reeves