1. Section 140(2) of the Constitution requires counter-signature of a Premier's written decision by another Executive Council member only if that decision concerns a function assigned to that other member. Where the Premier personally exercises a power vested in her office and does not delegate it, no counter-signature is required.
2. In administrative law review, the court is concerned with whether a decision was procedurally regular or irregular, not with whether it was substantively 'right' or 'wrong' - that is the province of appeals. Except in narrow circumstances, error of fact is not a ground of review.
3. Factual findings of an administrative decision-maker may be reviewed on rationality grounds only if they are so out of kilter with the evidence that they are irrational, meaning there is no rational connection between the evidence and the decision.
4. Where a disputant has been afforded a full and fair hearing before a specialist committee tasked with fact-finding in traditional leadership disputes, procedural fairness does not require that the Premier afford a further opportunity for representations before making a final decision based on the committee's recommendations, particularly where the empowering legislation uses permissive language ("may").
5. In review proceedings against a public office (not a person), a successor officeholder may properly file affidavits defending the decision of their predecessor, and confirmatory affidavits by the predecessor decision-maker are admissible to address allegations of irrationality or impropriety.