Although they avoid inference, the authors do point out those cases in which the data clearly show temporal trends or regional patterns. The consistent framework of the essays ensures that each topic addresses specific material and facilitates access to that material for the reader. The Introduction provides background information on the topic, sets the stage and defines key terms. The National Picture presents the topic and supporting data from the perspective of the entire Nation. Case Studies presents two or three detailed examples of the topic, usually at the local level.
Facts lead to, indeed often compel, interpretation.
In the last of the central sections, Expert Interpretation, each essay author poses two interpretative questions to a panel of three to four experts. The answers of these experts are provided not only as text, but also in their own voices as audio clips. These expert responses are thoughtful, sometimes provocative, even contentious. Interpretation is like that. Rounding out the essays are reference lists, annotated World Wide Web reference sites and a glossary.