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Scientific software engineering methods and their validity

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Scientific software engineering methods and their validity

  1. 1. Technische Universität München Philosophy of Science Scientific Methods and their Validity Dr. Daniel Méndez Fernández Prof. Dr. Manfred Broy Technische Universität München Institute for Informatics Software & Systems Engineering Dr. Antonio Vetrò
  2. 2. Goals of the talk §  Get (back) to a bigger picture –  Start from a general point of view in the philosophy of science –  Drill down to implications for every day scientific work (Projects, Publications, PhD Thesis, …) §  Discuss … –  how to allocate the presented methods into that picture –  the methods in context of a PhD dissertation –  the notion of validity and how to increase it 2
  3. 3. Agenda §  §  §  §  Postulate Scientific Methods Overview Scientific Methods “in Action” In Quest for the Validity 3
  4. 4. Agenda §  §  §  §  Postulate Scientific Methods Overview Scientific Methods “in Action” In Quest for the Validity 4
  5. 5. What is science? Science: Systematically and objectively gaining (and preserving), documenting, and disseminating knowledge §  In principle, science tries to be objective by aspiring knowledge based on “facts” (independent of subjective judgment!) However: §  Accepting scientific results is a social process (documentation, communication, following rules). §  Some elements of science (mathematics, logics) seem to be unbiased – but nevertheless rely on acceptance by the peers and capabilities to apply the theories. §  One could also say: “In the end, it is also a matter of beliefs, capability, and individual and social judgment” (following some basic principles, rules, and codes) 5
  6. 6. Philosophy and science Ontology (“Seinslehre”) Epistemology (“Erkenntnislehre”) Ethics (“Verhaltenslehre”) Ontological questions (“Außenweltproblem”) Questions on the “being” à Bound to reality Epistemological questions (“Erkenntnisproblem”) Questions on the observation / discovery Ethical questions (“Verhaltensproblem”) Questions on actions à Bound to morality Object-Subject relation 6 From: Orkunoglu, 2010
  7. 7. Philosophy and science Ontology (“Seinslehre”) Epistemology (“Erkenntnislehre”) Ethics (“Verhaltenslehre”) Ontological questions (“Außenweltproblem”) Is there a world independent of subjectivity? Epistemological questions (“Erkenntnisproblem”) From ehere do discoveries result?

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