The binding legal principles established are: (1) For contributory negligence to be properly pleaded, three key ingredients must be present: the fault of the plaintiff, how this fault caused the damages, and the extent to which it would be just and equitable to reduce damages, with particulars and extent of contributory negligence clearly pleaded; (2) Under section 27 of the Civil Evidence Act, first-hand hearsay evidence is admissible in civil proceedings if the witness saw, heard or otherwise perceived the statement being made, with weight determined by considering whether the statement was made when facts were fresh in the maker's mind and whether the maker had any incentive to conceal or misrepresent facts; (3) Negligence constitutes failure to exercise the due care that a reasonable person would have exercised in the circumstances; (4) A party who fails to discharge their onus of proof on a defense (such as mechanical failure) when that party had superior access to evidence will not succeed in that defense; (5) Negative inferences may be drawn when a party withholds documentary evidence that is in their possession and could assist the court.