<P><B></B> This book presents a clear and philosophically sound method for identifying, interpreting, and evaluating arguments as they appear in non-technical sources. It focuses on a more functional, <I>real-world</I> goal of argument analysis as a tool for figuring out what is reasonable to believe rather than as an instrument of persuasion. <B></B> Develops a precise, step-by-step method for analyzing arguments about a variety of topics -- shows how to rewrite arguments in a format that makes them clearer and makes their evaluation easier; and then how to evaluate the rewritten argument. Illustrates methods by applying them to both serious and humorous arguments about different topics as they appear in a variety of contexts — e.g., newspaper and magazine editorials and columns, short essays, informal reports of scientific results, etc. Uses simple, relatively non-controversial examples to illustrate the basic ideas and concepts, and then offers more complicated and controversial examples for challenging applications. <B></B> For anyone interested in identifying, interpreting, and evaluating arguments as they appear in non- technical sources. </P>