Acharya Prashant addresses the common misconception regarding the distinction between theoretical and practical knowledge. He explains that the term "practical" refers to anything that can be implemented or realized in reality. He argues that scientific theories, such as Ohm's law, Kirchhoff's law, and Kepler's law, are not merely bookish or imaginary; they are the very foundation upon which practical technologies like circuits, satellites, and missiles are built. Without understanding the underlying theory, such as the laws of gravitation or motion, it would be impossible to launch a missile or design functional machinery. He highlights the fundamental difference between a mechanic and an engineer. While a mechanic can perform repairs based on experience, an engineer uses theory to design and calculate the efficiency of systems. Acharya Prashant asserts that theory and practice are essentially the same, as all practice is rooted in theory. The perceived gap between the two arises from an educational system that fails to demonstrate how abstract concepts, like Maxwell's equations or Bernoulli's theorem, operate in the real world. He emphasizes that even an "ideal" concept like the Carnot cycle is indispensable for the existence of real-world engines. To truly understand a theory, one must look beyond symbols and equations to see how it functions in reality. Using the example of a ceiling fan, he explains how Bernoulli's theorem dictates the curvature of the blades to create pressure differences that move air. He encourages students to stop memorizing proofs for exams and instead perceive theory as a living, operational force. By relating concepts like angular momentum and center of gravity to everyday objects, such as the stability of a water bottle, students can realize that deep theoretical command is necessary to solve any practical problem.