The document discusses key concepts related to presumption and judicial notice in Malaysian law. It defines presumption as an inference drawn from known facts, and distinguishes between presumption of law and presumption of fact. It explains different types of presumptions under Malaysian law including those that the court "may presume", "shall presume", and those that constitute "conclusive proof". It also defines judicial notice as facts that a judge will notice without proof, and provides examples of facts that courts commonly take judicial notice of, such as identities of government leaders.