Interpretation of Statutes: Comparative Revision

This closing note sets the whole subject side by side for final revision: the rules of interpretation and when each applies, internal and external aids, the maxims, the presumptions, and the ten constitutional doctrines with the question each answers. It ends with the order in which a court ordinarily works through a disputed provision. Each line points back to the topic that treats it in full.

1. The Rules of Interpretation

Seven rules compared (Topics 3 to 10)

Figure 1: Seven rules compared (Topics 3 to 10)

2. Internal and External Aids

Aids compared (Topics 12, 13)

Figure 2: Aids compared (Topics 12, 13)

Weight. Operative internal aids, such as definitions, provisos and explanations, shape meaning directly; descriptive aids and external aids resolve ambiguity but never override clear words.

3. Maxims and Presumptions

Maxims of language. Ejusdem generis, noscitur a sociis, reddendo singula singulis (Topic 15)
Other maxims. Expressio unius, generalia specialibus, leges posteriores, ut res magis valeat, delegatus non potest delegare, actus curiae, lex non cogit ad impossibilia (Topic 16)
Presumptions. Constitutionality; no ouster of jurisdiction; no retrospectivity; no change in existing law; mens rea; territorial operation; the State is bound; conformity with international law (Topic 19)

4. The Constitutional Doctrines

Ten doctrines compared (Topics 27 to 36)

Figure 3: Ten doctrines compared (Topics 27 to 36)

5. The Order of Analysis

1. Read the words. Ordinary meaning, read in the context of the whole Act (Topics 2, 3)
2. Check for difficulty. Absurdity, ambiguity or conflict with another provision (Topics 4, 7)
3. Identify the purpose. Mischief, scheme, objects, internal and external aids (Topics 5, 6, 12, 13)
4. Apply the special rules. Strict, beneficial or fiscal construction according to the kind of statute (Topics 8 to 10)
5. Apply presumptions and maxims. Fill silence with presumptions; use maxims of language (Topics 15, 16, 19)
6. Test validity. Competence and fundamental rights through the constitutional doctrines, saving the law by reading down or severance where possible (Topics 27 to 36)

⚠ Final check

Every rule yields to clear words; every aid and presumption works within the text; every doctrine has a leading case. Before submitting any answer on interpretation, make sure the rule you rely on is matched to the condition that triggers it, and that each proposition carries its authority and year.

6. Related Topics

Topic 38: Leading Cases on Interpretation. The authorities behind this chart.
Topic 1: Meaning, Purpose and Approaches. The foundation of the subject.