While you are right that TDD is about design, and that it creates examples of use and contracts in a sense. There are better methods for this purpose like Desig

While you are right that TDD is about design, and that it creates examples of use and contracts in a sense. There are better methods for this purpose like Design by Contract which in my opinion is a superior method. Why? Mostly because TDD process of red-green-refactor is an evolutionary process. Like taking mother nature to design. It's un-intelligent design....hahahha