For cooperation to satisfy s 161S(2)(b) of the Penalties and Sentences Act 1992 (Qld), the evidence offered must be of real use to a successful prosecution of a major criminal offence — more than peripheral but not necessarily essential. The threshold is potentially onerous and is not satisfied by cooperation that merely repeats what is already known, is vague, or is undermined by the offender's lack of frankness about their own involvement. The assessment is a qualitative evaluation of the cooperation in the circumstances of the particular case.
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