This adage describes a scenario where the creator of something, whether a physical object or a service, does not require it for their own use. A classic example is a coffin maker; they construct an item essential for the deceased but have no personal need for it at the time of its creation. This concept can also apply to intangible creations, such as a teacher developing a curriculum they will not personally study.
The significance of this concept lies in its illustration of specialized labor and the interconnectedness of society. It highlights the division of labor where individuals contribute specific skills and products to the collective good, creating a system of interdependence. Historically, this specialization was a driving force behind economic development, allowing for greater efficiency and the production of a wider range of goods and services. Understanding this principle provides insight into market dynamics and the evolution of human cooperation.