It is said that a picture is worth a thousand words. If so, then an informational graphic is worth a thousand data entries if not more. Be they histograms, trend lines, scatterplots, pie charts, or choropleth maps, informational graphics allow us to discern what would otherwise be unmanageable loads of data indecipherable to the average person. Tufte had two major agendas with The Visual Display of Quantitative Information. One was to identify many of the mistakes and abuses common to informational graphics and to finger the main culprits. The second was to go beyond common errors to develop a general theory of data graphics that could be used to explore new ways to increase their efficiency and effectiveness.