Think of the reasons why we have to treat development as an iterative, experimental process. It is because we are disambiguating requirements that ought not be

Think of the reasons why we have to treat development as an iterative, experimental process. It is because we are disambiguating requirements that ought not be ambiguous. The value of TDD is as a stick to beat the business with: the proof that your requirements are not good enough is that there isn't enough information to write the tests.