Static design systems meet their limits when it comes to translating dynamic identity and its diverse messages into the visual. In Variable Visual Systems, Nils Hölscher devotes himself to the task of determining the fluidity of design elements and thereby examining, categorizing, and describing possible variable parameters. To this end, he compares various philosophical and creative positions (including those of Niklas Luhman, Richard Buckminster Fuller, Ulrike Felsing, Martin Lorenz, and Karl Gerstner), analyzes various flexible design systems, and conducts numerous graphic experiments. Fluid spaces of variation in visual systems make it possible to draw on this spectrum to formulate precise and diverse messages. The 200-page book is supplemented by a series of animated posters and the prototype of an experimental variable font.