“The invited lecturer, Yuri Engelhardt, started his speech by talking about the presence and importance of graphic representations throughout the history of the human been. Diagrams, maps, charts and many kind of symbols take part of our daily life. From clock faces to traffic signs or subway maps, or even those graphics that can be found in the neswspapers, they are everywhere around us. Computers deserve a special mention, where most information is transmitted to the user through graphic representation.”