Beate Jessel

• Why Reality overtakes Planning - Landscape Planning in the Light of System Theory and Functional Control. There is not only a common reality but different perspectives of reality and any perception is provisional and revisable. This opinion is a component of different approaches in science theory and perception theory. There are effects on ecological planning in various respects. They concern for example the comprehension of methods, the prognosis of complex systems and the part the landscape planner plays in this process. Concerning this attitude, methods as well as planning methods develop to means. Not to means of identification of true or false perception but to means of establishing deductive communication. Reality - also that of landscapes - changes steadily. Due to this creatures as well as their environment find themselves in a complex network process of adaption which is called co-evolution. This process can be seen in various changes in land use history. Accidental influences, for example the sudden application of anWhy Reality overtakes Planning - Landscape Planning in the Light of System Theory and Functional Control. There is not only a common reality but different perspectives of reality and any perception is provisional and revisable. This opinion is a component of different approaches in science theory and perception theory. There are effects on ecological planning in various respects. They concern for example the comprehension of methods, the prognosis of complex systems and the part the landscape planner plays in this process. Concerning this attitude, methods as well as planning methods develop to means. Not to means of identification of true or false perception but to means of establishing deductive communication. Reality - also that of landscapes - changes steadily. Due to this creatures as well as their environment find themselves in a complex network process of adaption which is called co-evolution. This process can be seen in various changes in land use history. Accidental influences, for example the sudden application of an innovation, may have an unpredictable impact on the development of landscapes. How can the planner deal with changes caused by accidental processes? The category of compensation measures (bases on the regulation of impacts) in the German planning system is a good example for this. These aspects plead against an extensive meaning of the term "landscape"-planning, because this would lead the subject ad absurdum. Planning as an unalterable component of human being can efficiently only change parts of our natural surroundings. It cannot control the complexity of landscape, but must explain the interaction of its components. Keywords: Landscape planning, planning theory, functional control, forecasts, perception, complex systems…