The authors use graphs to visually represent their data and often use comic strips as a tool of social commentary, which they try to avoid directly engaging in with their prose. They don't pursue deep reasons for the causes of economic inequality, nor do they offer potential remedies. Instead, the article works as an introduction and is intended for an audience with little or no experience in economics, as they define terms like "real income," "wealth," and "median net worth," which experienced economists would already understand.
The article frequently takes an historical perspective in order to show not only how things have changed over time, but also how things are potentially reverting to levels of the past. For example, one graphs shows the top 1% of the population's share of the household wealth from 1922 to 2001 (p. 53). The numbers dip in the middle of this period and then seem to be rising again to previous levels. A rhetorical question lingers behind all of the statistics: are we making any progress in creating economic equality?