Digitalization has transformed the discourse of architecture: that discourse is now defined by a wealth of new terms and concepts that previously either had no meaning, or had different meanings, in the context of architectural theory and design. Its concepts and strategies are increasingly shaped by influences emerging at the intersection with scientific and cultural notions from modern information technology. The new series Context Architecture seeks to take a critical selection of concepts that play a vital role in the current discourse and put them up for discussion. In the context of discussions of the medial, the notion of simulation plays a central role in architecture as illusion and imitation. In dialogue with information technology and computer science, however, that notion has now taken on a new quality in architectural discourse.