This book builds on "The elements of graphing data". Technology has moved on a long way since these books were written. However, improvements in presentation technology do not necessarily lead to the presentation of data in a way that provide insight. The key to getting the most from your data visualisations is understanding the contents of these two volumes not in Excel's pretty graphing tools. Obviously it is easier to bang out a pretty graph in Excel, than to digest all the information in these two volumes, but you get what you pay for.