The binding legal principles established are: (1) In evaluating evidence, courts must consider all evidence in a conspectus rather than compartmentalizing the State's case and the defence case - the conclusion reached must account for all the evidence (affirming S v Van der Meyden 1999 (1) SACR 447 (W) and S v Van Aswegen 2001 (2) SACR 97 (SCA)); (2) The test is whether guilt is established beyond reasonable doubt, or conversely, whether it is reasonably possible the accused might be innocent; (3) For private defence to succeed, there must be a reasonable relationship between the attack and the defensive act, considering factors such as relative strength of parties, their sex and age, means at their disposal, nature of the threat, value of the interest threatened, and persistence of the attack; (4) A person claiming private defence must not inflict injury or harm that is unnecessary to overcome the threat - if less harmful conduct could have averted the attack, the defence fails; (5) Objective medical evidence of injuries can be determinative in assessing whether an accused's account of limited defensive force is credible; (6) Provocation does not excuse conduct that exceeds the bounds of lawful private defence.