The question of the duration required to apply a coating to the entire landmass of Australia is a complex hypothetical scenario. It necessitates considering numerous factors, including the size of the area, the method of paint application, the type of paint used, weather conditions, and the resources available. A precise calculation is not feasible due to the inherent impracticality and scale of such an undertaking.
Such a theoretical exercise serves as a potent illustration of the vastness of the Australian continent and the challenges associated with large-scale logistical operations. It highlights the importance of efficient resource management, technological advancements, and precise planning when tackling ambitious projects, regardless of their applicability in the real world. Historical endeavors, such as the construction of the Great Wall of China or the Trans-Siberian Railway, provide tangible examples of human capacity for prolonged, large-scale construction, albeit different in nature.