Personally, I found that TDD works very well for small modules / classes, etc, when there's little design to be done. In this case, you can focus on writing dow

Personally, I found that TDD works very well for small modules / classes, etc, when there's little design to be done. In this case, you can focus on writing down the spec (test cases) and be fairly confident that it works by the time all test cases pass. Also, I agree with the author about complexity involved if one decides to go down the TDD way for large, complex systems. So, essentially, it boils down to picking the right tool for the job, and TDD is just a tool, like any others.