where k is Boltzmann's proportionality factor. Reversely, more integrity in the stiffness of a system that results in the decrease of the system's entropy is caused by entropic forces on the constituents of the system. Before we get into elegant mathematical expressions developed on basis of the entropy concept and their physical implications, we first use the beauty of nature (1; 2) to ease its explanation in a plain context. We picture in mind a mechanistic view through which an out-of-equilibrium system reaches an equilibrium state through the dissipation of entropic energy in and out of its body.