Dagmar SchäferDagmar Schäfer is Director of Department III, 'Artefacts, Action and Knowledge', of the Max-Planck-Institut für Wissenschaftsgeschichte, Berlin. She has published widely on materiality, the processes and structures that lead to varying knowledge systms, and the changing role of artefacts - texts, objects and spaces - in the creation, diffusion and use of scientific and technological knowledge. Read More Read Less