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Necessity
Necessary or necessity may refer to: * Need ** An action somebody may feel they must do ** An important task or essential thing to do at a particular time or by a particular moment * Necessary and sufficient condition, in logic, something that is a required condition for something else to be the case * Necessary proposition, in logic, a statement about facts that is either unassailably true (tautology) or obviously false (contradiction) * Metaphysical necessity, in philosophy, a truth which is true in all possible worlds * Necessity in modal logic * Necessity good in economics ;Law * Doctrine of necessity, a concept in constitutional law * Military necessity, a concept in international law * Necessity (criminal law), a defence in criminal law * Necessity (tort), a concept in the law of tort * A necessity in contract law ;Other * , a poem by Letitia Elizabeth Landon being part of ''Three Extracts from the Diary of a Week'', 1837. * "Necessary" (song), by Every Little Thing, 1998 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necessity (criminal Law)
In the criminal law of many nations, necessity may be either a possible justification or an exculpation for breaking the law. Defendants seeking to rely on this defense argue that they should not be held liable for their actions as a crime because their conduct was ''necessary'' to prevent some greater harm and when that conduct is not excused under some other more specific provision of law such as self defense. As a matter of political expediency, states usually allow some classes of person to be excused from liability when they are engaged in socially useful functions but intentionally cause injury, loss or damage. For example, a drunk driver might contend that they drove their car to get away from being kidnapped (cf. ''North by Northwest''). Most common law and civil law jurisdictions recognize this defense, but only under limited circumstances. Generally, the defendant must affirmatively show (i.e., introduce some evidence) that (a) the harm they sought to avoid outweigh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doctrine Of Necessity
The doctrine of necessity is the basis on which extra-constitutional actions by administrative authority, which are designed to restore order or attain power on the pretext of stability, are considered to be lawful even if such an action contravenes established constitution, laws, norms, or conventions. The maxim on which the doctrine is based originated in the writings of the medieval jurist Henry de Bracton, and similar justifications for this kind of extra-legal action have been advanced by more recent legal authorities, including William Blackstone. In a controversial 1954 judgment, Pakistani Chief Justice Muhammad Munir validated the extra-constitutional use of emergency powers by Governor General, Ghulam Mohammad. In his judgment, the Chief Justice cited Bracton's maxim, 'that which is otherwise not lawful is made lawful by necessity', thereby providing the label that would come to be attached to the judgment and the doctrine that it was establishing. The doctrine of nece ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necessity (novel)
''Necessity'' is a fantasy/science fiction novel by the Welsh–Canadian author Jo Walton, published by Tor Books in 2016. It is the conclusion of the '' Thessaly trilogy'', and the sequel to '' The Just City'' and ''The Philosopher Kings'', which were both published in 2015. Synopsis In '' The Just City'' a city was created by the time-traveling goddess Athena on the island of Thera prior to its Iron Age volcanic destruction. It was then populated by philosophers and children from all ages of human history and organized on the principles of Plato's '' Republic'', which turned out not to work so well in practice. In ''The Philosopher Kings'' the single original city had split into a dozen: five feuding ones on Thera and another eight on other islands where it was discovered that the inhabitants were preaching Christianity to Iron Age Greeks. In large part because of the anachronistic introduction of Christianity, all of the cities were relocated by Zeus to an uninhabited far-off ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metaphysical Necessity
In philosophy, metaphysical necessity, sometimes called broad logical necessity, is one of many different kinds of necessity, which sits between logical necessity and nomological (or physical) necessity, in the sense that logical necessity entails metaphysical necessity, but not vice versa, and metaphysical necessity entails physical necessity, but not vice versa. A proposition is said to be ''necessary'' if it could not have failed to be the case. Nomological necessity is necessity according to the laws of physics and logical necessity is necessity according to the laws of logic, while metaphysical necessities are necessary in the sense that the world could not possibly have been otherwise. What facts are metaphysically necessary, and on what basis we might view certain facts as metaphysically but not logically necessary are subjects of substantial discussion in contemporary philosophy. The concept of a metaphysically necessary being plays an important role in certain arguments f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necessity (tort)
In tort common law, the defense of necessity gives the state or an individual a privilege to take or use the property of another. A defendant typically invokes the defense of necessity only against the intentional torts of trespass to chattels, trespass to land, or conversion. The Latin phrase from common law is ''necessitas inducit privilegium quod jura privata'' ("Necessity induces a privilege because of a private right"). A court will grant this privilege to a trespasser when the risk of harm to an individual or society is apparently and reasonably greater than the harm to the property. Unlike the privilege of self-defense, those who are harmed by individuals invoking the necessity privilege are usually free from any wrongdoing. Generally, an individual invoking this privilege is obligated to pay any actual damages caused in the use of the property but not punitive or nominal damages. Private necessity Private necessity is the use of another's property for private reasons. W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necessary Proposition
Modal logic is a collection of formal systems developed to represent statements about necessity and possibility. It plays a major role in philosophy of language, epistemology, metaphysics, and natural language semantics. Modal logics extend other systems by adding unary operators \Diamond and \Box, representing possibility and necessity respectively. For instance the modal formula \Diamond P can be read as "possibly P" while \Box P can be read as "necessarily P". Modal logics can be used to represent different phenomena depending on what kind of necessity and possibility is under consideration. When \Box is used to represent epistemic necessity, \Box P states that P is epistemically necessary, or in other words that it is known. When \Box is used to represent deontic necessity, \Box P states that P is a moral or legal obligation. In the standard relational semantics for modal logic, formulas are assigned truth values relative to a ''possible world''. A formula's truth value at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Modal Logic
Modal logic is a collection of formal systems developed to represent statements about necessity and possibility. It plays a major role in philosophy of language, epistemology, metaphysics, and natural language semantics. Modal logics extend other systems by adding unary operators \Diamond and \Box, representing possibility and necessity respectively. For instance the modal formula \Diamond P can be read as "possibly P" while \Box P can be read as "necessarily P". Modal logics can be used to represent different phenomena depending on what kind of necessity and possibility is under consideration. When \Box is used to represent epistemic necessity, \Box P states that P is epistemically necessary, or in other words that it is known. When \Box is used to represent deontic necessity, \Box P states that P is a moral or legal obligation. In the standard relational semantics for modal logic, formulas are assigned truth values relative to a ''possible world''. A formula's truth value at ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necessary And Sufficient Condition
In logic and mathematics, necessity and sufficiency are terms used to describe a conditional or implicational relationship between two statements. For example, in the conditional statement: "If then ", is necessary for , because the truth of is guaranteed by the truth of (equivalently, it is impossible to have without ). Similarly, is sufficient for , because being true always implies that is true, but not being true does not always imply that is not true. In general, a necessary condition is one that must be present in order for another condition to occur, while a sufficient condition is one that produces the said condition. The assertion that a statement is a "necessary ''and'' sufficient" condition of another means that the former statement is true if and only if the latter is true. That is, the two statements must be either simultaneously true, or simultaneously false. In ordinary English (also natural language) "necessary" and "sufficient" indicate relations betw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Military Necessity
Military necessity, along with distinction, and proportionality, are three important principles of international humanitarian law governing the legal use of force in an armed conflict. Attacks Military necessity is governed by several constraints: an attack or action must be intended to help in the military defeat of the enemy; it must be an attack on a military objective,Article 52 of ''Additional Protocol I to the Geneva Conventions'' provides a widely accepted definition of military objective: "In so far as objects are concerned, military objectives are limited to those objects which by their nature, location, purpose or use make an effective contribution to military action and whose total or partial destruction, capture or neutralization, in the circumstances ruling at the time, offers a definite military advantage" (Source: ). and the harm caused to civilians or civilian property must be proportional and not "excessive in relation to the concrete and direct military advan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Necessity Good
In economics, a necessity good or a necessary good is a type of normal good. Necessity goods are product(s) and services that consumers will buy regardless of the changes in their income levels, therefore making these products less sensitive to income change. Examples include repetitive purchases of different durations such as haircuts, addictive habits including tobacco, everyday essentials such as electricity and water, and critical medicine such as insulin. As for any other normal good, an income rise will lead to a rise in demand, but the increase for a necessity good is less than proportional to the rise in income, so the proportion of expenditure on these goods falls as income rises. If income elasticity of demand is lower than unity, it is a necessity good. This observation for food, known as Engel's law, states that as income rises, the proportion of income spent on food falls, even if absolute expenditure on food rises. This makes the income elasticity of demand for food be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bathroom
A bathroom or washroom is a room, typically in a home or other residential building, that contains either a bathtub or a shower (or both). The inclusion of a wash basin is common. In some parts of the world e.g. India, a toilet is typically included in the bathroom; in others, the toilet is typically given a dedicated room separate from the one allocated for personal hygiene activities. In North American English the word 'bathroom' is sometimes used to refer to any room in a residence that contains a toilet, regardless of the inclusion of a bath or shower. Historically, bathing was often a collective activity, which took place in public baths. In some countries the shared social aspect of cleansing the body is still important, as for example with '' sento'' in Japan and the "Turkish bath" (also known by other names) throughout the Islamic world. Variations and terminology The term for the place used to clean the body varies around the English-speaking world, as does the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Second Bill Of Rights
The Second Bill of Rights or Bill of Economic Rights was proposed by United States President Franklin D. Roosevelt during his State of the Union Address on Tuesday, January 11, 1944. In his address, Roosevelt suggested that the nation had come to recognise and should now implement, a second "bill of rights". Roosevelt argued that the "political rights" guaranteed by the Constitution and the Bill of Rights had "proved inadequate to assure us equality in the pursuit of happiness". His remedy was to declare an "economic bill of rights" to guarantee these specific rights: * Employment (right to workThis "right to work" is not to be confused with the "right-to-work laws" to which this term usually alludes inside the United States.) * An adequate income for food, shelter, and recreation * Farmers' rights to a fair income * Freedom from unfair competition and monopolies * Decent housing * Adequate medical care * Social security * Education These rights have come to be known as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
