If you are a business owner you want to know that your SEO vendor isn't selling you a feel-good story or you are the Enlightened SEO vendor who can explain how your work brings the greatest amount of traffic in search
Here is a simple but interesting, real-life sample that illustrates how easy it is to be wrong when you assume you know what people will search for in order to find a product or business online. You would be wrong with most of your assumptions
In SEO we gravitate to what is wrong. We look at what is not working (unhealthy). Or we look at the keywords we DON'T RANK FOR. (everyone wants to rank for everything) Therein lies the nature of our human problem. Stop doing it backwards!