Precedent, also known as judicial precedent or case law, plays a crucial role in both statutory and codified legal systems. These systems are legal frameworks that govern a society, and they provide rules and regulations that individuals and institutions must follow. Here’s an explanation of the importance of precedent in each type of legal system.

Your provided text provides an accurate and comprehensive overview of the concept of precedent in common law legal systems. Here are some key points highlighted in the passage:

1. Definition of Precedent: A precedent is defined as a principle or rule established in a previous legal case that serves as a reference for a court when deciding subsequent cases with similar issues or facts.
2. Binding and Persuasive Authority: Precedent can be either binding or persuasive. Binding precedent must be followed by a court, while persuasive precedent is not mandatory but can be considered and used to guide the decision-making process.
3. Purpose of Precedent: The general principle in common law systems is that similar cases should be decided similarly to ensure consistent and predictable outcomes. Precedent serves as the mechanism to achieve this goal.
4. Black’s Law Dictionary Definition: The passage includes a definition from Black’s Law Dictionary, which describes precedent as a “rule of law established for the first time by a court for a particular type of case and thereafter referred to in deciding similar cases.”
5. Three Kinds of Law: The text notes that common law precedent is considered a third kind of law, alongside statutory law (laws enacted by legislatures) and regulatory law (rules and regulations created by executive branch agencies).
6. Equal Footing with Statutory and Regulatory Law: The passage emphasizes that common law precedent holds equal footing with statutory and regulatory law. This reflects the importance and authority of precedent in shaping the legal landscape.
7. Common Law Systems (Statutory Systems):

• In common law systems, such as those in the United States, the United Kingdom, and many other countries, judicial decisions are a significant source of law. A precedent is created when a court makes a decision in a particular case, and that decision serves as a guide or authority for future cases.
• Stare decisis, a Latin term meaning “to stand by things decided,” is a fundamental principle in common law systems. It emphasizes the importance of courts following prior decisions and maintaining consistency in the application of the law.
• Precedent helps ensure predictability and stability in the legal system. Lawyers and judges can look to past decisions to understand how the law has been interpreted and applied in similar situations.

8. Civil Law Systems (Codified Systems):

• In civil law systems, such as those found in many continental European countries, the legal code is the primary source of law. These systems rely more heavily on statutes and written laws, with less emphasis on precedent compared to common law systems.
• However, even in codified systems, precedent can still play a role, especially in interpreting and applying statutes. Courts may consider past decisions as persuasive authority or use them to interpret vague or unclear statutory language.
• Precedent helps fill gaps in the written law, providing guidance when the statute is silent or ambiguous. It contributes to the development of a consistent and coherent legal framework.

9. Binding precedent in English law
Judges are bound by the law of binding precedent in England and Wales and other common law jurisdictions. This is a distinctive feature of the English legal system. In Scotland and many countries throughout the world, particularly in mainland Europe, civil law means that judges take case law into account in a similar way but are not obliged to do so and are required to consider the precedent in terms of principle. Their fellow judges’ decisions may be persuasive but are not binding. Under the English legal system, judges are not necessarily entitled to make their own decisions about the development or interpretation of the law. They may be bound by a decision reached in a previous case. Two facts are crucial to determining whether a precedent is binding:

1. The position in the court hierarchy of the court which decided the precedent, relative to the position in the court trying the
   current case.
2. Whether the facts of the current case come within the scope of the principle of law in previous decisions.
   10. Persuasive precedent
   Persuasive precedent (also called persuasive authority or advisory precedent) is precedent or other legal writing that is not binding. precedent but that is useful or relevant and that may guide the judge in making the decision in a current case. Persuasive precedent includes cases decided by lower courts, by peers or higher courts from other geographic jurisdictions, cases made in other parallel systems (for example, military courts, administrative courts, indigenous and tribal courts, state courts versus federal courts in the United States), statements made in dicta, treatises, or academic law.

In a case of first impression, courts often rely on persuasive precedent from courts in other jurisdictions that have previously dealt with similar issues. Persuasive precedent may become binding through its adoption by a higher court. In Civil law and pluralist systems, as under Scots law, precedent is not binding but case law is taken into account by the courts.
11. Lower courts
A lower court’s opinion may be considered as persuasive authority if the judge believes they have applied the correct legal principle and reasoning.
12. Higher courts in other circuits
A court may consider the ruling of a higher court that is not binding. For example, a district court in the United States First Circuit could consider a ruling made by the United States Court of Appeals for the Ninth Circuit as persuasive authority.
13.Horizontal courts
Courts may consider rulings made in other courts that are of equivalent authority in the legal system. For example, an appellate
court for one district could consider a ruling issued by an appeals court in another district.
14. Statements made in obiter dicta.
Courts may consider obiter dicta in opinions of higher courts. Dicta of a higher court, though not binding, will often be persuasive to lower courts. The obiter dicta are usually translated as “other things said”, but due to the high number of judges and several personal decisions, it is often hard to distinguish from the ratio decidendi (reason for the decision). For this reason, the obiter dicta may usually be taken into consideration.

Interpretation
Judges in the U.K use three primary rules for interpreting the law. The normal aids that a judge has include access to all previous cases in which a precedent has been set, and a good English dictionary. Under the literal rule, the judge should do what the actual legislation states rather than trying to do what the judge thinks that it means. The judge should use the plain everyday ordinary meaning of the words, even if this produces an unjust or undesirable outcome. A good example of problems with this method is R v Maginnis (1987) in which several judges found several different dictionary meanings of the word “supply”. Another example might be Fisher v Bell, where it was held that a shopkeeper who placed an illegal item in a shop.
window with a price tag did not make an offer to sell it, because of the specific meaning of “offer for sale” in contract law. As a result of this case, Parliament amended the statute concerned to end this discrepancy.
The golden rule is used when use of the literal rule would obviously create an absurd result. The court must find genuine difficulties before it declines to use the literal rule. There are two ways in which the Golden Rule can be applied: the narrow method, and the broad method. Under the narrow method, when there are apparently two contradictory meanings to a word used in a legislative provision or it is ambiguous, the least absurd is to be used. For example, in Adler v George (1964), the defendant was found guilty under the Official Secrets Act of 1920.

The mischief rule is the most flexible of the interpretation methods. Stemming from Haydon’s Case (1584), it allows the court to enforce what the statute is intended to remedy rather than what the words actually say. For example, in Corkery v Carpenter (1950), a man was found guilty of being drunk in charge of a carriage, although in fact he only had a bicycle. In the United States, the courts have stated consistently that the text of the statute is read as it is written, using the ordinary meaning of
the words of the statute.
1.”[I]n interpreting a statute a court should always turn to one cardinal canon before all others. … [Courts must presume that.
a legislature says in a statute what it means and means in a statute what it says there.” Connecticut Nat’l Bank v. Germain,
112 S. Ct. 1146, 1149 (1992). Indeed, “when the words of a statute are unambiguous, then, this first canon is also the last:
‘Judicial inquiry is complete.’ “
2. “A fundamental rule of statutory construction requires that every part of a statute be presumed to have some effect, and
not be treated as meaningless unless absolutely necessary.” Raven Coal Corp. v. Absher, 153 Va. 332, 149 S.E. 541
(1929)

Pros and cons
There is much discussion about the virtue or irrationality of using case law in the context of stare decisis. Supporters of the system, such as minimalists, argue that obeying precedent makes decisions “predictable.” For example, a businessperson can be reasonably assured of predicting a decision where the facts of his or her case are sufficiently similar to a case decided previously. This parallels the arguments against retroactive (ex post facto) laws banned by the U.S. Constitution. An argument often used against the system is that it is undemocratic as it allows judges, which may or may not be elected, to make law.
A counterargument (in favor of the concept of stare decisis) is that if the legislature wishes to alter the case law (other than constitutional interpretations) by statute, the legislature is empowered to do so. Critics sometimes accuse particular judges of applying the doctrine selectively, invoking it to support precedent that the judge supported anyway, but ignoring it in order to change precedent with which the judge disagreed.

Conclusion:

In summary, while the role of precedent may be more explicit and central in common law systems, it still holds importance in codified systems. Precedent helps maintain consistency, predictability, and fairness in the application of the law, whether that law is primarily based on statutes or relies on a combination of statutes and judicial decisions. The relationship between statutory law and precedent can vary by jurisdiction, but both elements contribute to the overall functioning and evolution of legal systems. In common law systems, the reliance on precedent is a fundamental aspect of the legal process, contributing to the stability, consistency, and fairness of the legal system. It ensures that decisions are not made arbitrarily and that similar cases are treated similarly, providing a basis for legal predictability.