This representation is questioned by the historian Shamus Sillar, who cites the construction of roads and reinforcement of fortifications in the western provinces, among other things, as being contradictory to the representation made by Gibbon of cruelty and destruction. The history professors Molefi Asante and Shaza Ismail note that Caracalla is known for the disgraceful nature of his rule, stating that "he rode the horse of power until it nearly died of exhaustion" and that though his rule was short, his life, personality, and acts made him a notable, though likely not beneficial, figure in the Roman Empire.