The document discusses negligence as a common tort, detailing its origin, definitions, and essential conditions for legal liability. It emphasizes the duty of care owed by defendants to plaintiffs, outlining the requirements for proving negligence, including breach of duty and resulting damage. Additionally, it covers the legal precedent set by the case of Donoghue v. Stevenson, and introduces the concept of 'res ipsa loquitur' as a means to establish negligence when the evidence lies primarily with the defendant.