In Un-Selling The Gun a couple of weeks ago I touched upon the problem of conveying the impact of firearms on the individuals and communities they effect. Humans arent always very good at understanding data. In fact, some studies have shown that comprehending specific amounts above the number 3 is still a relatively new skill. And thats where charts, maps, visualizations, and narratives come in handy. People will go to some interesting lengths to compensate for the limitations of the human brain.