The mischief rule is used to determine the intention of Parliament when enacting legislation. It looks at the problem or defect that the law was meant to address, known as the "mischief." Heydon's Case established four questions to determine the mischief: 1) what was the common law prior to the Act, 2) what issue was the common law not addressing, 3) how does the Act aim to remedy this, and 4) what was the purpose of the remedy. Later cases like Smith v Hughes and Elliott v Grey applied the mischief rule broadly to find defendants guilty in order to suppress the mischief, even when a literal reading may have found otherwise. The mischief rule aims to achieve Parliament's intent but