The ruling confirms that non-expert opinion evidence about the likely effect of evidence on trial outcomes is inadmissible, and that hearsay evidence of facts within the knowledge of other persons must be proved by those persons directly or by production of records. The critical question whether confessions by a deceased third party to the offence of which the appellant was convicted are admissible as an exception to the hearsay rule was reserved for the full Court of Criminal Appeal, with the single judge providing an extensive review of the unsettled state of Australian law on declarations against penal interest following Bannon v The Queen. The court also applied the purposive approach to statutory interpretation from CIC Insurance to construe s 79C(4) of the Evidence Act 1906 (WA).
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