by Michael Coveney, co-author of "Budgeting, Planning, and Forecasting in Uncertain Times"
Analytic models are rarely static. Their aim is to model the organisation in such a way as to allow managers to investigate what is actually going on and to assess changes to the way it operates. These changes may include looking at price/cost structures; the way in which departments are organised; partnerships; outsourcing; or introducing new products/services into new territories.
In each investigation, the model being used will evolve as new information is uncovered that impacts into what is being analysed.