The document discusses the concepts of invention, innovation, diffusion, obsolescence, and how technological change affects obsolescence. It notes that invention creates new technologies which are then continuously improved through innovation. New technologies diffuse through societies as innovations increase their success rate over time. However, the introduction of newer, improved technologies will make older ones obsolete. As a result, consumers are constantly seeking the latest technologies, which are often considered obsolete just a few years after their initial release due to rapid technological advancement.