But the problem for Mark, for Jeremiah, and for all of us (including yours truly) is that we too easily default to framing our understanding of advertising in its own terms. We regard advertising as an independent variable: something ya gotta have. But in fact advertising is a dependent variable. The independent variable is the individual human being. As Chris Locke put it so perfectly nine years ago, we are not seats or eyeballs or end users or consumers. we are human beings and our reach exceeds your grasp. Deal with it.