The article explores advanced debugging techniques employed by senior engineers to effectively identify and resolve complex software issues. Debugging is described as a detective-like process that requires investigation rather than immediate problem-solving. Key strategies include utilizing Integrated Development Environments (IDEs) to surface detailed information about code, writing out assumptions to clarify and test hypotheses using Behavior-driven Development (BDD), and employing rubber duck debugging to articulate and refine problem-solving approaches. It also suggests making small, controlled changes to the code to understand its behavior better and emphasizes the importance of taking breaks to allow the subconscious mind to contribute to problem-solving. The article underscores the rewarding nature of debugging and encourages a methodical, focused approach to finding solutions.