This principle can be illustrated by using the facts of Donoghue v Stevenson. If Mrs Donoghue had discovered the snail before drinking the ginger beer, or had not suffered any ‘injury’ from seeing it, she would not have been able to recover in tort from the manufacturer for the simple defect. Similarly, if the ginger beer had been flat, she could not have recovered in tort from the manufacturer for the defect in quality.