Grand Dessein du Rationalisme is a hybrid publication that brings together eighteen architectural projects of the student collectives of Roberto Gargiani's Superstudio at the Swiss Federal Institute of Technology in Lausanne, 2020-2021, and a series of thirteen theoretical, practical and historical studies on (antagonistic) rationalism in architecture. Roberto Gargiani (born 1956) is an Italian architectural historian. He taught the history of architecture in Florence, Rouen, Paris, Venice and Rome. Since 2005, he has been professor of architectural history at the Federal Polytechnic School of Lausanne (EPFL).