“That the tort of negligence is a mess goes almost without saying.” So said David Ibbetson in How the Romans Did for Us: Ancient Roots of the Tort of Negligence (2003) 26 UNSWLJ 475. As James Plunkett put it in The Duty of Care in Negligence (Hart Publishing, 2018), p. 76: Since Donoghue v Stevenson…