Theoretical knowledge refers to understanding concepts, principles, and ideas that explain how things work. It is often gained through study, research, and analysis rather than direct experience. This type of knowledge is foundational in fields like science, mathematics, and philosophy, where abstract thinking is essential for developing theories and models. Unlike practical knowledge, which involves hands-on skills and real-world application, theoretical knowledge provides the framework for understanding complex systems. It helps individuals make sense of phenomena and predict outcomes, serving as a basis for further exploration and experimentation in various disciplines, including engineering and social sciences.