This paper discusses what the future modeling environments could look like. To tackle with ever increasing complexity of process models, higher level of abstraction needs to be exploited. It is noticed that the most natural way to connect low-level models to high-level tools is simulation. Based on such semantic grounding, new description formalisms can perhaps be implemented. 1. NEW CHALLENGES Because of the fieldbuses, and because of the modern sensor technology, etc., the availability of the industrial processes has been enhanced considerably. There is an explosion of structureless data facing us. The problem is that there do not exist enough domain area experts that could analyze the data and rewrite the models for the processes appropriately. Automatic modeling systems would be invaluable – systems that could not only adapt the model parameters within a predetermined structural framework, but also determine the structures themselves without too much human intervention. The modeling problems are attacked by utilizing different kinds of description formalisms. One major approach is to define more and more general formalisms (like Java language) for system description: In such environments, anything can be expressed, but this means that large numbers of expressions are needed

General System Theory concept is close to theory of control systems. In this chapter, we try to find a systematic view of complexity from the viewpoint of system concepts. The first part of the chapter covers about General System Theory from Bertalanffy’s book “General System Theory ” [1]. In this book he shows that reductionism is completely wrong and modelling the system from the holistic viewpoint is the correct approach. One approach to looking at complex systems in a systemic perspective and a way to control the emerging patterns as well is demonstrated. 14.1 General System Theory “System Theory ” represents a novel paradigm in scientific thinking [1]. General system theory is similar to “theory of evolution”, which comprises about everything between fossils digging, anatomy and the mathematical theory of selection, or behavior theory extending from bird watching to sophisticated