This keynote presentation was held in Medialab Prado Madrid in March 2007, to introduce the VISUALIZAR project that would take place in November.
It is a journey through the history of information visualization, and intends to make a case for the artistic and social potencial of infovis as a language.
The presentation is in Spanish and includes dozens of examples. Regine Debatty from We Make Money Not Art translated most of the talk in this article: