“Entropy is a scientific concept, most commonly associated with states of disorder, randomness, or uncertainty. The term and the concept are used in diverse fields, from classical thermodynamics, where it was first recognized, to the microscopic description of nature in statistical physics, and to the principles of information theory. It has found far-ranging applications in chemistry and physics, in biological systems and their relation to life, in cosmology, economics, and information systems including the transmission of information in telecommunication [1]. The whole idea of entropy has caused, and continues to cause, problems of real understanding for all but especially for students. Here it is hoped to highlight some, but inevitably not all, of those problems and to provoke thought among interested parties towards producing clear and accurate solutions.