Hans Poser

Modal concepts as possibility, necessity, contingency and reality belong to the most important means of reflection. They constitute philosophical systems - but they are not used in a systematic way to characterize technology. The central ontological problem consists in the fact that technology is based on new ideas, which at the beginning are a mere possibility, because the intended artifacts and processes never existed up to that moment. Even the blueprint expresses a possibility. But these possibilities must be realizable, since technological artifacts or processes have to work properly in the world following physical andcausal necessity. Moreover, boundary conditions, sometimes seen as feasibility (a very special kind of conditioned possibility), have to take into account conditions of the real world (as material, energy, local conditions), cognitive conditions (theoretical knowledge, know how – i.e. dispositions, which are possibilities, too), social and cultural conditions (norm, values i.e. deontic possibilities). They all constitute the realm of technological possibility. Within this region the development of technology takes place. But at the same time they have influenced our thinking and our culture from the very beginning.

Nothing is as complex as the world – but soon we must master this complexity to be able to live in it. Our means to do so are the languages. However, they are so manifold and so differently in vocabulary, structure and in the way linked with the world that it is difficult to ascribe to them a common relation. Noam Chomsky’s empirical search for a deep structure grammar had no success. For Leibniz our actual world is infinitely complex, beginning with the monad and its subordinated “worlds in the worlds”. Thus exactly our problem constellation of today can already be found there–namely how to master infinite complexity by languages. But what connects these languages? This will be discussed from (1) the representational function of signs concerning the connection between res / signum / notio / idea, via (2) the Ars characteristica and its formal-linguistic sign systems; the next step counts (3) for the natural languages and their functions, marked above all by an adaptation to new problems. The last step deals with the functions of languages, finally leading to the unity of reason.

Complexity theories are on the way to establish a new worldview—processes instead of objects, history and uniqueness of everything instead of repetition and lawlikeness are the elements. These theories from deterministic chaos via the dissipative structures, the theory of catastrophes, self organization and synergetics are mathematical models, connected with a new understanding of science. They are characterized by new fundamental commitments of sciences. But at the same time, they are characterized by epistemic boundaries.