Abstract

The determination of specific limitations of biological descriptions, explanations and structuralisations presupposes a proper understanding of the methodical status of “function”. This is particularly relevant if biological knowledge is supposed to play a crucial argumentative role even beyond the limits of the empirical science. In such cases it is not easily determinable at which point purely empirical knowledge enters into the argument and where additional methodical and methodological aspects must be considered. This paper provides a methodological reconstruction of the functional form of biological knowledge itself, which is unfolded in three consecutive steps. The reconstruction starts with the determination of model-theoretical prerequisites of functional structuralisation of biotic entities as organisms. The second step explicates the logical grammar of functional and dysfunctional characters. Based upon this reconstruction, the systematic relation between the form of functional and evolutionary arguments is reconsidered. Finally some of the argumentative burdens are developed, which result from the use of biological language- and theory-particles being applied beyond the scope of validity that is and can be claimed for their proper use within their original life-scientific language game.