Logic is the system of reasoning and the study of correct thinking. It is concerned with identifying valid arguments and drawing conclusions based on evidence and rationality. It involves abstract concepts and principles that govern the structure and validity of reasoning processes. Logic is used to analyze and evaluate arguments, identify fallacies, and construct sound reasoning. It helps in different fields such as mathematics, computer science, philosophy, and linguistics by providing a framework for rigorous thinking. Through logic, consistency, coherence, and validity in reasoning can be achieved, allowing for clearer and more reliable decision-making and problem-solving.