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2. Synthesis
What are the expected changes in the systems under consideration?
How accurate are the forecasts likely to be?
What models can be built of part or the whole of the situation describing behavior, processes, operating conditions, etc.? In what form should these models be – graphical, tabular or mathematical? Can the models be manipulated to simulate changes in the system?
What is the optimum for the whole system? What system is ‘best’, taking all aspects into consideration with a proper weighting for each? How reliable is this system and what uncertainties remain?
What can be done to ensure that the ‘best’ system is realized in practice?