If you’re trying to segment your market in the traditional way, what you may be looking for would be groups of consumers sorted out in such a way that a certain likeness exists within each group, and a difference exists between them. The variable determining the meaningful likeness or difference between those groups would be the segmentation variable. A trivial segmentation variable, just for the sake of demonstration, would be hair color. However, after having segmented the customers into groups, it is reasonable to assume that you would expect to do something with it. Let’s say that you have decided to target a certain segment. You would probably want to do some marketing activities that will appeal to this segment, or else, to communicate some kind of enticing message to it. Sometimes, the segmentation variable could suffice for the purpose, (“listen to me, all you red-heads out there”). In most cases (for instance, the segment of those who consume beer only out side their home), you would have to characterize your segment before you could address them. In other words, you would have to define what describes the customers in that segment, beyond your...