Do you ever wonder whether you've been a little trained, like Pavlov's dogs? I do. I get so used to the pat and stock things that usually I accept them, unquestioningly. But when a moment comes that I do pause and ponder, I wonder why this idea or this image is supposed to be so representative, either of a concept or of something I'm supposed to like or want. It happens all the time in marketing and advertising. Every day I'm bombarded with images and messages directed to me (the marketing bucket of me, anyway: middle-class, practically middle-aged mom with two kids and buying power): laundry detergents that power through stains, clothing that makes me look hot, cosmetics and creams that make me look young again, ads about weight loss, and so forth. I wonder, which came first: the chicken or the egg? Did I look at my teeth one day and wonder about their color or did an ad tell me I needed to whiten my teeth? TV, radio, billboards, Web sites and yes, even magazines. All ...