
The distinction between 'law' and 'fact' is a topic that has puzzled philosophers and lawyers alike. In science, a fact is an observation that has been confirmed and accepted as 'true', whereas a law is a detailed description of how something in the natural world behaves, often involving mathematics. In law, a question of law is answered by a judge, and a question of fact is answered by a jury. This article will explore the nuances of these terms in both science and law.
Differences between a Law and a Fact
| Characteristics | Law | Fact |
|---|---|---|
| Definition | A law describes an observed phenomenon or a unifying concept. | A fact is an observation that has been repeatedly confirmed and for all practical purposes is accepted as "true". |
| Who decides? | Questions of law are for the judge to decide. | Questions of fact are for the jury to decide. |
| Examples | In a criminal case, a question of law might be "was a search warrant supported by probable cause". | A fact could be "apples fall down from this apple tree" because it is a simple statement that can be proven. |
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What You'll Learn

In law, questions of fact are for the jury to decide
In many jurisdictions, such as England and Wales, appellate courts generally do not consider appeals based on errors of fact. Instead, the findings of fact of the first venue are typically given deference by appellate courts. However, the distinction between law and fact is not always clear-cut, and there may be disagreement over whether a given statement is a question of law or fact. For instance, in the context of an OWI case in Michigan, a judge might rule on whether a traffic stop was legal, but the validity of the initial traffic stop could also be considered a question of fact.
Ultimately, it is the jury's responsibility to decide what the facts of a case are and to determine the importance of each piece of evidence. This includes assessing the credibility of witnesses and evidence presented. The jury's decision on any fact in a case is final. While the judge's role is to instruct the jury on the law and ensure they follow the legal principles provided, it is the jury's duty to apply these legal principles to the specific facts of the case and reach a conclusion.
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Questions of law are for the judge to decide
In the legal system, questions of law are reserved for the judge to decide, whereas questions of fact are for the jury to decide. This distinction is important for determining the outcome of a case, as it defines the roles and responsibilities of the judge and jury in the legal process.
A question of law, also known as a point of law, is a question that must be answered by a judge and cannot be answered by a jury. It involves the interpretation and application of legal principles and is distinct from a question of fact. Questions of law are often broad and can be applied to multiple situations, rather than being limited to specific circumstances or facts. For example, in a criminal case, a question of law might be whether a search warrant was supported by probable cause or whether a breath or blood test is admissible as evidence.
The judge's role in deciding questions of law is crucial for ensuring the proper interpretation and application of the law. Judges are responsible for instructing the jury on the law that they must apply in a given case. They may also rule on pretrial motions, such as whether certain evidence is admissible or whether an individual's rights were violated during the investigation or arrest. These decisions can significantly impact the outcome of a case, as critical evidence may be suppressed even before the trial begins.
In contrast, questions of fact are resolved by a trier of fact, which is often a jury in the common law system. The jury's role is to examine the evidence presented in a case and determine the facts. This includes evaluating the credibility of witnesses, considering the importance of each piece of evidence, and making inferences from the facts presented. The jury's decision on any fact in a case is final and must be based on their interpretation of the evidence and the instructions provided by the judge on the applicable law.
While questions of law and questions of fact are distinct, there is sometimes ambiguity in classifying a given statement as one or the other. This ambiguity has led to debates and disagreements among legal professionals and philosophers. Nonetheless, the distinction is essential for the functioning of the legal system, as it delineates the responsibilities of the judge and jury, ensuring a fair and impartial trial.
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In science, a fact is an observation confirmed as true
Facts are simple, one-off observations that have been proven to be true. They are specific and context-dependent, and they do not change based on circumstances. For instance, it is a fact that apples fall from an apple tree. This statement is a fact because it is a simple observation that can be easily proven.
In contrast, a law in science is a descriptive generalization about how some aspect of the natural world behaves under specific circumstances. It is a detailed description, often involving mathematics, of the relationship between two or more things in the natural world based on various facts and empirical evidence. For example, Newton's Law of Universal Gravitation describes the behaviour of matter with precision, making it possible to predict how a moon will act based on its size and distance from its planet.
While laws provide a framework for understanding natural phenomena, they do not explain why these phenomena occur or what causes them. For instance, the law of gravity states that the strength of gravity between any two objects depends on their masses and the distance between them, but it does not explain why gravity exists.
It is important to note that the terms "fact," "hypothesis," "theory," and "law" have specific meanings in science that may differ from their everyday usage. These terms are separate elements of the scientific method, and they do not simply upgrade from one to another as more evidence is found. Instead, they each play distinct roles in the scientific process, helping scientists understand and explain the natural world.
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A law is a detailed description of a natural phenomenon
In science, a law is a detailed description of a natural phenomenon. It is a generalised observation about a relationship between two or more things in the natural world, based on a variety of facts and empirical evidence. Laws are often framed as mathematical statements. For example, Newton's law of universal gravitation describes the way matter behaves with precision, making it easy to predict how a moon will act based on its size and proximity to a planet.
However, it is important to note that a scientific law does not explain why a phenomenon exists or what causes it. It simply describes the behaviour of natural phenomena under certain circumstances.
In contrast, a fact in science is a simple, one-off observation that has been proven true. For instance, observing that "apples fall down from an apple tree" is considered a fact. While facts are essential building blocks of scientific understanding, they do not offer the same level of predictive power or explanatory depth as scientific laws.
The distinction between laws and facts is crucial in both scientific and legal contexts. In law, questions of fact are resolved by a trier of fact, often a jury, who examine evidence and reach conclusions based on specific circumstances. On the other hand, questions of law are answered by judges, who apply broad legal principles that can be generalised across various situations.
While the terms "law" and "fact" have specific meanings in science and law, their everyday usage may differ. In common parlance, a "fact" may refer to an observation or piece of information generally accepted as true, while a "law" could pertain to a rule or principle governing behaviour or a legal system.
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A law doesn't explain why a phenomenon exists
In science, a law is a detailed description of how some aspect of the natural world behaves, usually involving mathematics. It is a descriptive generalisation about how some aspect of the natural world behaves under stated circumstances. Laws are based on a variety of facts and empirical evidence.
Newton's law of universal gravitation, for example, describes the way matter behaves with precision. It makes it easy to predict how a moon will act based on its size and proximity to a planet. However, it does not explain why this is the case.
Similarly, the law that "the strength of gravity between any two objects depends on the masses of the objects and the distance between them" describes the behaviour of two objects in certain circumstances. However, it does not explain why this phenomenon exists. If the circumstances were to change, the implications of the law would also change. For instance, if the objects were to shrink to a subatomic size, they would behave differently.
Therefore, a scientific law does not explain why a phenomenon exists or what causes it. Instead, it is a description of an observed phenomenon or a unifying concept.
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Frequently asked questions
A fact is an observation that has been confirmed and accepted as "true".
A law is a detailed description of how something in the natural world behaves, usually involving mathematics.
Questions of law are for a judge to decide, whereas questions of fact are for a jury to decide.
A fact is a one-off observation that has been proven true. A law is a generalised observation about the relationship between two or more things in the natural world based on facts and empirical evidence.
While facts are accepted as true, science always leaves room for uncertainty. Therefore, a fact can be modified or even discarded if new information comes to light.


















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