Baltic J. Modern Computing, Vol. 9 (2021), No. 1, pp. 67–110 https://doi.org/10.22364/bjmc.2021.9.1.05 Philosophy of Modeling in the 1870s: A Tribute to Hans Vaihinger Karlis Podnieks Faculty of Computing, University of Latvia 19 Raina Blvd., Riga, LV-1586, Latvia
[email protected] Abstract. This paper contains a detailed exposition and analysis of The Philosophy of “As If“ proposed by Hans Vaihinger in his book published in 1911. However, the principal chapters of the book (Part I) reproduce Vaihinger’s Habilitationsschrift, which was written during the autumn and winter of 1876. Part I is extended by Part II based on texts written during 1877–1878, when Vaihinger began preparing the book. The project was interrupted, resuming only in the 1900s. My conclusion is based exclusively on the texts written in 1876-1878: Vaihinger was, decades ahead of the time, a philosopher of modeling in the modern sense – a brilliant achievement for the 1870s! And, in the demystification of such principal aspects of cognition as truth, understanding and causality, is he not still ahead of many of us? According to Vaihinger, what we set beyond sensations is our invention (fiction), the correspondence of which with reality cannot (and need not) be verified in the mystical, absolute sense many people expect. Keywords: fictionalism, fiction, hypothesis, dogma, sensations, reality, truth, understanding, modeling 1 Introduction “Aller Dogmatismus ist hier verschwunden,“ according to Simon et al. (2013). I suspect that by saying this regarding his book, Hans Vaihinger meant, in fact, that if people would adopt his Philosophie des Als Ob, most of traditional philosophy would become obsolete.