What is the function of the common law system?

Answer 1

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This article is about the general legal concept. For the book by Oliver Wendell Holmes, Jr., see The Common Law.

Common law refers to law and the corresponding legal system developed through decisions of courts and similar tribunals (called case law), rather than through legislative statutes or executive action. Common law is law created and refined by judges: a decision in a currently pending legal case depends on decisions in previous cases and affects the law to be applied in future cases. When there is no authoritative statement of the law, judges have the authority and duty to make law by creating precedent.[1] The body of precedent is called "common law" and it binds future decisions. In future cases, when parties disagree on what the law is, an idealized common law court looks to past precedential decisions of relevant courts. If a similar dispute has been resolved in the past, the court is bound to follow the reasoning used in the prior decision (this principle is known as stare decisis). If, however, the court finds that the current dispute is fundamentally distinct from all previous cases, it will decide as a "matter of first impression." Thereafter, the new decision becomes precedent, and will bind future courts under the principle of stare decisis. In practice, common law systems are considerably more complicated than the idealized system described above. The decisions of a court are binding only in a particular jurisdiction, and even within a given jurisdiction, some courts have more power than others. For example, in most jurisdictions, decisions by appellate courts are binding on lower courts in the same jurisdiction and on future decisions of the same appellate court, but decisions of non-appellate courts are only non-binding persuasive authority. Interactions between common law, constitutional law, statutory law and regulatory law also give rise to considerable complexity. However stare decisis, the principle that similar cases should be decided according to consistent principled rules so that they will reach similar results, lies at the heart of all common law systems. Common law legal systems are in widespread use, particularly in those nations which trace their legal heritage to Britain, including the United Kingdom, most of the United States and Canada, and other former colonies of the British Empire. http://en.wikipedia.org/wiki/Common_law