Swiss media artist Jürg Lehni shares a glimpse of his robotic drawing machine Otto (2015) at work at Museum für Gestaltung Zürich. As part of “Planet Digital,” Lehni and historian Monika Dommann have the device trace historical diagrams that represent motion (e.g. traffic plans, ballet notation) to delineate “A Visual History of Flow.” The drawing in progress is the Dench Blues Double Pattern from the International Committee for Artistic Roller Skating rule book.