»Niklas Luhmann at the Higher Administrative Court of Lüneburg«: In 2017, the Higher Administrative Court of Lüneburg, Niklas Luhmann's first place of work, hosted a conference on his early work, which had a decisive influence on his later systems theory. The volume documents contributions by Hanna Engelmeier, Fabian Steinhauer, Ino Augsberg, Maren Lehmann, Sven Opitz, Günther Ortmann and Elena Esposito on Luhmann's personal file, early legal studies, errors, routines and interruptions as figures of thought, and his early insights on digital cultures.