Inspired by ecology and landscape, we choose our system of interest in nature to be a beach where the water and land interface with each other separated by a shoreline.(3) Imagine our hypothetically closed system undergoes an applied external energy driving it away from equilibrium to a non-equilibrium state of energy. The external field can lead to an increase in the water level or the height of the waves. In this scenario, the system strives to dissipate its unbearable extra energy to the environment through seemingly endless morphological changes in the self-assembled topological landscape with the infinitely jagged and wiggly fractal curve at the system's boundaries of the infinite perimeter.(4) These changes can manifest through shoreline evolution, the shape and height of the sand bars in beach breaker regions, and beach dunes. These collective changes result in a temporarily new quasistatic equilibrium state-time-dependent dynamic equilibrium-with relative stability in the properties of water and land at the interface and beyond. The water and land ultimately reach an equilibrium state where their properties only are subjected to slight fluctuations. However, the scale of these fluctuations, for instance, the change in the shoreline position, is extremely different from the fluctuations that are commonly used in statistical mechanics for microscopic degrees of freedom when the system is in equilibrium with its surounding. The question that is risen in mind is: Can a large macroscopic system or universe be considered in an equilibrium state but still with ongoing random oscillations on a proportional scale resulting from the collective microscopic fluctuations of constituting particles? While in this study, we implicitly provide insight to answer this question, our main focus remains to clarify the meaning of entropy in a fluent language. Toward this end, we begin by elaborating on why this concept was founded by comparing thermodynamics with Newtonian mechanics. Then we discuss the reversibility of a process and how an irreversible process from a macroscopic perspective is encompassed by reversible microscopic motions of particles within the system. In the end, we drive Newton's second law of motion from the work and energy equality relation of non-equilibrium statistical mechanics.