Anne Lacaton and Jean-Philippe Vassal are known for an architecture that privileges inhabitants’ freedom and pleasure through generous, open designs. The Paris-based architects opened their 2015 lecture at Harvard University with a manifesto: morestudy and create an inventory of the existing situation; densify without compressing individual space; promote user mobility, access, choice; and most importantly, never demolish. Freedom of Use reflects on these core values to present a fluid narrative of Lacaton and Vassal’s oeuvre, articulated through processes of accumulation, addition, and extension.