The text is an introduction to a four-part series that explores the evolution of software development methodologies, focusing on the transition from the traditional Waterfall model to more modern approaches like Agile. It highlights how software engineers often work within systems established by their predecessors, emphasizing the slow, methodical nature of progress in software development. The Waterfall model, originating from hardware development practices, is described as a structured process with phased progression that was initially praised for its predictability and thorough documentation. However, its inflexibility and inability to adapt quickly to changes became apparent, making it less suitable for the fast-paced software industry. The text sets the stage for the subsequent exploration of Agile methodologies, which arose as a response to the limitations of Waterfall, aiming to provide a more adaptable and efficient framework for software development.