Who hasn't been confronted with an imprecise description of a subject when dealing with a file initiated by a colleague?
We all come to the same conclusion, more or less: "There are holes in the racket! I'm (still!) going to have to spend two hours asking for more information."
We then come up with a multitude of simple but essential questions which, if we take a step back, amount to instinctively unrolling the QQOQCCP!
Quite simply, this means that QQOQCCP is an effective, simple and even efficient method. So let's dare to be efficient!