کتاب Informal Logic A Handbook for Critical Argument This is an introductory guide to the basic principles of constructing good arguments and criticizing bad ones It is nontechnical in its approach and is based on 150 key examples each discussed and evaluated in clear illustrative detail The author explains how errors fallacies and other key failures of argument occur He shows how correct uses of argument are based on sound argument strategies for reasoned persuasion and critical questions for responding Among the many subjects covered are techniques of posing replying to and criticizing questions forms of valid argument relevance appeals to emotion personal attack uses and abuses of expert opinion problems in deploying statistics loaded terms equivocation and arguments from analogy