The procedure used in the
following chapters of the book is referred n mathematics
as the axiomatic procedure. It forces us to formulate all
the requirements clearly. This prevents hidden premises
from creeping in. Hypotheses are drawn from the analysis
of existing empirical data of the Kepler telescope, which
are called approaches and axioms. The statements derived
from this are formulated as sentences. All axioms and
sentences lead to an overall representation of the
situation, which can then be used as a working
hypothesis. It should be noted here that the following paper is not an exact calculation method for determining the number of extraterrestrial civilizations, but an estimation of size using statistical methods, based on data that is as reliable or empirical as possible. This paper also shows how to develop a systematic model for life, intelligence and civilization in the galaxy. The theory presented in this book, i.e. all prerequisites, approaches, axioms and propositions mentioned in the chapters, are falsifiable in the sense of today's epistemology. Can therefore, in the future, be confirmed or refuted. Thus the model formulated here (especially equation system 6.3.3, equation 8.4.2 and equation 12.2.2) fulfils the property of falsifiability, in Popper's sense and thus represents a scientific hypothesis regarding the existence of alien civilizations in a galaxy. Furthermore, the model is a fundamental contribution to exobiology, namely the existence of (intelligent) life in the galaxy. For the sake of completeness and traceability, we have published almost the entire model. This makes it possible for everyone to recalculate all numbers themselves. This stringing together of mathematics may be somewhat tedious for a normal reader, but it seemed necessary to us in order to obtain sufficient transparency and to make the derivations comprehensible. 
A new version of the book
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176 Sites 84 coloured Illustrations 9 Tables Production und Publishing: Books on Demand GmbH, Norderstedt ISBN 9783752855241 Price: 22 Euro 
