(noun) rigor severity / (noun) roughness of surface; unevenness / (noun) a tiny projection from a surface / (noun) roughness of sound / (noun) roughness of manner or of temper; harshness
Empire is a ‘smooth space’, as Hardt and Negri put it with reference to a concept coined by Deleuze. It does not experience the ‘asperities’ that are the borders or political and/or economic inequalities characteristic of the national ancien régime.