International workshop on the topic of "Ignorance and non-knowledge". When: November 13-14, 2018. Where: University of Vienna, Austria. Confirmed keynote speakers: Linsey McGoey (University of Essex), Matthias Gross (University of Jena, Helmholtz Centre for Environmental Research – UFZ), Stefan Böschen (RWTH Aachen) & Ulrike Felt (University of Vienna, Department of Science and Technology Studies).