Res ipsa loquitur (Latin: "the thing speaks for itself") is a doctrine in the Anglo-American common law and Roman Dutch law that says in a tort or civil lawsuit a court can infer negligence from the very nature of an accident or injury in the absence of direct evidence on how any defendant behaved. Although modern formulations differ by jurisdiction, Anglo-American common law originally stated that the accident must satisfy the necessary elements of negligence: duty, breach of duty, causation, and injury. In res ipsa loquitur, the elements of duty of care, breach, and causation are inferred from an injury that does not ordinarily occur without negligence.