Analyses are necessary to establish the starting point for the ensuing improvements and thereby make them controllable and measurable. Ideally, the people involved do these analyses, so that they can see for themselves where the numbers don't add up, and so they can start asking the right questions.
When only consultants do the analyses, the baseline is miserable. This is because the identified results are solely the consultant’s problem, and not that of those involved. That is why it is important that those involved develop a picture themselves, that they adopt a different viewpoint and look at their work, so they can achieve results. The results are the responsibility of all those involved, as they are established by everyone, as a group.