The document discusses the doctrine of jurisdictional error, highlighting its relevance in legal contexts, particularly through the example of the Mohamed Haneef affair where a federal court quashed a decision to cancel a visa based on jurisdictional error. It explains the distinctions between various types of errors, including differences between errors of fact and errors of law, and outlines the traditional framework surrounding jurisdictional errors that influence judicial review. The text also elaborates on specific legal principles and cases to illuminate the complexities of jurisdictional error in administrative law.