This article clarifies the key differences between prototypes and final products, highlighting common misconceptions among product creators, especially those without engineering backgrounds. It discusses the complexities involved in developing commercial-quality products and the limitations of current prototyping tools.

The article discusses why large software systems are often poorly understood, even by their creators. It highlights the challenges of documenting complex features and the reliance on engineers' tacit knowledge to answer basic questions about the software's functionality. As software evolves, keeping track of these details becomes increasingly difficult.