Over a 50-year career spanning lumber yards, retail software, Scrum and AI-assisted development, one principle has remained constant: the best professionals think clearly about the problem before reaching for a tool. Whether it was a pencil and clipboard in 1972 or AI in 2026, the tool itself was never the differentiator — the quality of thinking behind it was. The same holds true today: great developers define the problem before opening an IDE, write tests before writing code, and ask AI a good question before accepting its answer. Tools will keep changing. Clear thinking never goes out of style.