This book provides an overview of effectively understanding information. One goal of this book is for law enforcers to understand the legality of their actions via math, grammar, and logic. This book applies math and English to the law so that police officers may effectively articulate their actions in court. For example, specific laws and police actions can be evaluated via truth tables and Venn Diagrams. Some of the factors that can influence the value of information include assumptions, limitations, different lenses of truth, different ethical systems, different police department orientations, and the format in which the data are presented. For example, a suspect may attempt to mislead an officer by using existential and universal quantifiers and by using the converse of conditional statements. Another goal of this book is to apply basic math skills to common law enforcement scenarios. For example, the methods of determining angles, distances, and speeds are presented.