Question special

One of the proposed ways to decrease the c-section rate is to move women back to their homes for delivery where surgery is not an option. One of the limitations of this change in practice is that it never answers the question of why we are performing so many c-sections, nor does it confirm the validity of the choice to go to surgery. We often say that once the child is born it's impossible to determine definitively whether the c-section was necessary. Is that absolutely or necessarily true? Have we really made exhaustive attempts to look retrospectively at c-section cases in an attempt to identify markers that might correlate c-section with improved outcomes for mother/child?