Building a valuable project nowadays is considered as solving a problem for humans. Given the amount of details to solve in a project, it is easy to miss the big picture at some point. Remembering to ask “why” is to be sure that we don’t lose track of what we are doing and for whom. Doing it five times in a row allows to find the hidden answer, the real problem. To discover the causes that bring the original problem and what we need to focus on in order to solve it.