1. Moreover, the “utilitarian fallacy” in reasoning about space activities might also raise false expectations and respective disappointments, which — in the end — might even affect the spirit of spaceflight: see Lingner, Stephan. “Human Spaceflight as a Matter of Culture and National Vision.” Humans in Outer Space — Interdisciplinary Odysseys. Luca Codignola and Kai-Uwe Schrogl (eds.) Wien New York: Springer 2008: 175–181.
2. See Butler, Samuel. “The Atlas of Ancient and Classical Geography.” 21 November 2005. The Project Gutenberg EBook. EBook #17124. 20 October 2010. http://www.gutenberg.org/files/17124/17124-h/17124-h.htm.
3. See Cobet, Justus. „Wie weit reicht Europa und was heißt Europa? February 1998. Newsletter no. 8. Europäische Akademie Bad Neuenahr-Ahrweiler GmbH. 20 October 2010. http://www.ea-aw.de/fileadmin/downloads/Newsletter/NL_08_021998.pdf.
4. See Kant, Immanuel. „Beantwortung der Frage: Was ist Aufklärung?“ Berlinische Monatsschrift (Dec. 1784): 481–494. 20 October 2010. http://www.uni-potsdam.de/u/philosophie/texte/kant/aufklaer.htm.
5. See Funtowicz, Silvio, and Jerry Ravetz. Post-Normal Science. Science and Governance under Conditions of Complexity. Interdisciplinarity in Technology Assessment. Michael Decker (ed.) Berlin Heidelberg New York: Springer 2001: 15–24.