A central concept in his work was sociotechnical systems, i.e. he regarded techniques as societal structures. Ropohl was a critic of the systems theory of Niklas Luhmann and voted for the recognition of material culture. His definition of the utility, b) artificiality and c) functionality. In the focus of his work is the combination of technique as artefact and action, whereas knowledge insinuates the meta-concept of technology. Therefore, he differentiated between engineering sciences and technical sciences. Ropohl was well known in the German-speaking academia for his writings on the concepts of Technik and Technologie, the ethics of technology, technology assessment, professional ethics for engineers and on the societal need for educating towards technology literacy. He received a Festschrift with contributions from academic scholars, focusing on his work and related discourses, both on his 65th and 75th birthday, including a complete list of his publications from the late 1960s to 2014.
Selected publications in English
Article on systems-theoretical approaches and morphological methods in forecasting, in; Technological Forecastings in Practice, Farnborough/Lexington, MA: Saxon Jouse 1973, pp. 29–38.
Article in Research in Philosophy and Technology, Vol. 2, ed. P. T. Durbin, Greenwich, CT: Jai Press 1979, pp. 15–52.
"Information doesn't make sense", in Carl Mitcham and Alois Huning : Philosophy and Technology II: Information Technology and Computers in Theory and Practice, Dordrecht/Boston MA 1986, pp. 63–74.
"Knowledge Types in Technology", in: M.J. de Vries & A. Tamir, Shaping Concepts of Technology. From Philosophical Perspective to Mental Images, Dordrecht 1997.
"Technological enlightenment as a continuation of modern thinking", in Carl Mitcham : Research in philosophy and technology, vol. 17, Technology, ethics and culture, Creenwich CT/London: Jai Press 1998, pp. 239–248.
, in: Society for Philosophy and Technology, Spring 1999, Volume 4, Number 3, 1999.
Allgemeine Technologie : Eine Systemtheorie der Technik. 3rd ed. of the 1979 book, Karlsruhe: Universitätsverlag 2009; http://digbib.ubka.uni-karlsruhe.de/volltexte/1000011529
Signaturen der technischen Welt : Neue Beiträge zur Technikphilosophie, Berlin/Münster: LIT Verlag 2009
Besorgnisgesellschaft, Berlin: Parodos 2014
Books about his work
Karl Eugen Kurrer: The history of the theory of structures, Ernst & Sohn 2008, pp. 148–152.
Nicole C. Karafyllis/Tilmann Haar : Technikphilosophie im Aufbruch. Festschrift für Günter Ropohl. Berlin: Edition Sigma, 2004.
Nicole C. Karafyllis : Das Leben führen? Lebensführung zwischen Technikphilosophie und Lebensphilosophie. Für Günter Ropohl zum 75. Geburtstag. Berlin: Edition sigma, 2014
Elisabeth Gräb-Schmidt: Technikethik und ihre Fundamente. Dargestellt in Auseinandersetzung mit den technikethischen Ansätzen von Günter Ropohl und Walter Zimmerli. De Gruyter 2002.
Friedrich Rapp: "", Society for Philosophy and Technology, 1995.