"Our school systems—and political systems—are designed to promote people who are verbal and eloquent. And text tends to encourage us to describe our problems as narratives or linear lists of facts. But dynamic, complicated problems—like global warming and economic reform—often can’t be boiled down to simple narratives. They’re systems; they have many little parts affecting one another. In those situations, drawing a picture can clarify what’s going on. For example, during the health care debate, President Obama couldn’t seem to communicate how the heck reform would work, no matter how many speeches he gave."