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Prima facie (/ /, //, or //; from Latin: prīmā faciē) is a Latin expression meaning on its first encounter, first blush, or at first sight. The literal translation would be "at first face" or "at first appearance", from the feminine form of primus ("first") and facies ("face"), both in the ablative case. It is used in modern legal English to signify that on first examination, a matter appears to be evident from the facts. In common law jurisdictions, prima facie denotes evidence that – unless rebutted – would be sufficient to prove a particular proposition or fact. The term is used similarly in academic philosophy. Most legal proceedings require a prima facie case to exist, following which proceedings may then commence to test it, and create a ruling.
In most legal proceedings, one party has a burden of proof, which requires it to present prima facie evidence for all of the essential facts in its case. If they cannot, its claim may be dismissed without any need for a response by other parties. A prima facie case might not stand or fall on its own; if an opposing party introduces other evidence or asserts an affirmative defense it can only be reconciled with a full trial. Sometimes the introduction of prima facie evidence is informally called making a case or building a case.
For example, in a trial under criminal law the prosecution has the burden of presenting prima facie evidence of each element of the crime charged against the defendant. In a murder case, this would include evidence that the victim was in fact dead, that the defendant's act caused the death, and evidence that the defendant acted with malice aforethought. If no party introduces new evidence, the case stands or falls just by the prima facie evidence or lack thereof.
Prima facie evidence need not be conclusive or irrefutable: At this stage, evidence rebutting the case is not considered, only whether any party's case has enough merit to take it to a full trial.
In some jurisdictions such as the United Kingdom, the prosecution in a criminal trial must disclose all evidence to the defense. This includes the prima facie evidence.
An aim of the doctrine of prima facie is to prevent litigants from bringing spurious charges which simply waste all other parties' time.
Prima facie is often confused with res ipsa loquitur (literally, "the thing speaks for itself"), the common law doctrine that when the facts make it self-evident that negligence or other responsibility lies with a party, it is not necessary to provide extraneous details, since any reasonable person would immediately find the facts of the case.
The difference between the two is that prima facie is a term meaning there is enough evidence for there to be a case to answer. Res ipsa loquitur means that because the facts are so obvious, a party need explain no more. For example: "There is a prima facie case that the defendant is liable. They controlled the pump. The pump was left on and flooded the plaintiff's house. The plaintiff was away and had left the house in the control of the defendant. Res ipsa loquitur."
This doctrine has been subsumed by general negligence law in Canadian tort law.
The phrase is also used in academic philosophy. Among its most notable uses is in the theory of ethics first proposed by W. D. Ross, often called the Ethic of Prima Facie Duties, as well as in epistemology, as used, for example, by Robert Audi. It is generally used in reference to an obligation. "I have a prima facie obligation to keep my promise and meet my friend" means that I am under an obligation, but this may yield to a more pressing duty. A more modern usage prefers the title pro tanto obligation: an obligation that may be later overruled by another more pressing one; it exists only pro tempore.
The phrase prima facie is sometimes misspelled prima facia in the mistaken belief that facia is the actual Latin word; however, the word is in fact faciēs (fifth declension), of which faciē is the ablative.
In policy debate theory, prima facie is used to describe the mandates or planks of an affirmative case (or, in some rare cases, a negative counterplan). When the negative team appeals to prima facie, it appeals to the fact that the affirmative team cannot add or amend anything in its plan after being stated in the first affirmative constructive.
A common usage of the phrase is the concept of a "prima facie speed limit", which has been used in Australia and the United States. A prima facie speed limit is a default speed limit that applies when no other specific speed limit is posted, and which may be exceeded by a driver. However, if the driver is detected and cited by police for exceeding the limit, the onus of proof is on the driver to show that the speed at which the driver was travelling was safe under the circumstances. In most jurisdictions, this type of speed limit has been replaced by absolute speed limits.