1. A provision that imposes a legal burden of proof on an accused person, such that the accused may be convicted despite the existence of a reasonable doubt as to guilt, violates the presumption of innocence protected by section 25(3)(c) of the Constitution.
2. An evidentiary provision that permits persons to be charged with an offence and required to defend themselves based merely on proof of facts that are not themselves suggestive of criminal conduct violates the right to a fair trial entrenched in section 25(3) of the Constitution.
3. The right to a fair trial under section 25(3) is broader than the specific rights enumerated in subsections (a) to (j) and embraces a concept of substantive fairness.
4. To justify a limitation of fair trial rights under section 33(1), the State must provide specific evidence demonstrating why the particular provision challenged is reasonable, necessary and justifiable, not merely evidence supporting the general legislative purpose of the statute.
5. In determining whether to exercise discretion under section 98(6)(a) regarding the temporal effect of declarations of invalidity, the Court should balance the interests of justice (including affording relief to those whose rights have been infringed) against the need to avoid undue disruption to the criminal justice system.
6. Provisions using the language "prima facie evidence" generally create only an evidential burden, not a legal burden of proof, and require only that the accused raise evidence sufficient to create a reasonable doubt.
7. An irrebuttable presumption may operate as a rule of substantive law (effectively a definition) rather than a rule of evidence, and does not necessarily violate fair trial rights if the prosecution must still prove all elements of the offence beyond reasonable doubt.