Even many semi-quantifiable problems, such as threats to species and food chains, have not yet been incorporated into global models. There is an increasing gap between the world of the global modeller and the world in which many in the international community perceive themselves as living. As such, modellers face increasing difficulty in legitimizing their efforts to the wider public which must approve any major policy decisions based on their models. Such a factor should be integrated into a realistic global model. For this reason this project is based on entries with which such constituencies identify, using their language wherever possible.
Global models are unique because of the breadth of the theories they endeavour to embody.
Whereas the human brain is well suited for finding complex relationships, it is only such computer simulations that are adept at tracing numerous dynamic relationships simultaneously over time. Unfortunately the theories and simulations are based on data series established and accepted in the past. New events, or configurations of crises, not envisaged by the theories and for which no theoretically acceptable data exists, cannot be rapidly incorporated into such models. The models may even have to be totally redesigned to handle such data which cross, interlink, and call into question, existing categories. As in warfare, there is a limit to the degree to which reliance can be placed on simulation of the evolution of a battle.