Tuesday I attended a webinar with Scott Ambler "Agile Modeling: A Disciplined Approach to Modelling and Documentation".
Scott is mainly known for his work in the Systems area and author for "Disciplined Agility". His ideas are very valid also in the field of "Business Modelling". And Scott has always interesting formulations bringing things to the point.
Tuesday he used multiple times the phrase "Under Modelling" and explained the benfits and why you should start small - just good enough . and grow from there. This is also very true in Business Modelling. A very common problem in Business Process Modelling is a too detailed description, the effort is too high and understanding and acceptance dimishes. In doing "Under Modelling" - intentionally - we can avoid many problems. We have to accept that models are incomplete and maybe incorrect at least to a certain level of abstration. It is easier, more efficient to add missing model elements (for the purpose), often stakeholders make us aware and often they can also deliver information needed for the models.