Discover the foundational principles of logical reasoning with INTRODUCTION TO LOGIC, the definitive guide for students and educators. This fifteenth edition, updated by Carl Cohen and Victor Rodych from Irving M. Copi’s classic text, offers a clear, gradual approach to mastering logic. Enhancements in deductive validity, truth-table methods, indirect proof, and conditional proof provide deeper understanding and practical application. Explore new sections on argument soundness and demonstrative arguments, alongside helpful appendices for efficient truth-table techniques. Ideal for anyone seeking to build a strong foundation in logic, this comprehensive book is your essential resource for critical thinking and rigorous argumentation.