A juror's note alleging coercion by a fellow juror falls within the exclusionary rule as evidence intrinsic to jury deliberations, and is inadmissible. There is no residual discretion in Australian law to admit evidence of jury deliberations even in cases of alleged juror coercion. The exclusionary rule is so well established that any significant modification should be undertaken by the legislature or the ultimate appellate court, not by an intermediate Court of Appeal.
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