This article provides a solid overview of essential software design principles, but one area that could be further explored is how these principles apply to more complex, real-world systems. For example, while modularity is highlighted with simple Python examples, in larger systems, modularity can lead to challenges like dependency management and versioning. It might be helpful to discuss strategies for managing these complexities, such as using dependency injection or service-oriented architectures. Additionally, the discussion on abstraction could include more advanced scenarios where multiple layers of abstraction are necessary, such as in microservices. Expanding on these ideas would give developers a deeper understanding of how to implement these principles in larger-scale projects.