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Ladder (disambiguation)

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61-436: A ladder is a runged climbing aid. Ladder , The Ladder , or Ladders may also refer to: Ladder A ladder is a vertical or inclined set of rungs or steps commonly used for climbing or descending. There are two types: rigid ladders that are self-supporting or that may be leaned against a vertical surface such as a wall , and rollable ladders, such as those made of rope or aluminium , that may be hung from

122-404: A carabiner . If a leaning ladder is placed at the wrong angle, the risk of a fall is greatly increased. The safest angle for a ladder is 75.5°; if it is too shallow, the bottom of the ladder is at risk of sliding, and if it is too steep, the ladder may fall backwards. This angle is achieved by following the 4 to 1 rule for a ladder placed on a vertical wall: for every four feet of vertical height,

183-399: A gallows , while others attribute it to ancient Egyptian traditions involving pyramids and triangles representing the trinity of the gods, and passing through the triangular shape made by a ladder against a wall was seen as desecration. Ladders have also been linked to the crucifixion of Christ , with author and scientist Charles Panati noting that many believe a ladder rested against

244-654: A heuristic tool hence those influence a variety of consumer behaviors. John C. Mowen et al. says, after taking into account for a set of antecedents, trait superstitions are predictive of a wide variety of consumer beliefs, like beliefs in astrology or in common negative superstitions (e.g., fear of black cats). A general proneness to be superstitious leads to enduring temperament to gamble, participation in promotional games, investments in stocks, forwarding of superstitious e‐mails, keeping good‐luck charms, and exhibit sport fanship etc. Additionally it has been estimated that between $ 700 million and $ 800 million are lost every Friday

305-465: A mirror is said to bring seven years of bad luck . From ancient Rome to Northern India, mirrors have been handled with care, or sometimes avoided all together. Horseshoes have long been considered lucky. Opinion is divided as to which way up the horseshoe ought to be nailed. Some say the ends should point up, so that the horseshoe catches the luck, and that the ends pointing down allow the good luck to be lost; others say they should point down, so that

366-433: A certain item of clothing or jewelry or carry a certain item like a bag because it brings them 'luck' and allow good things to happen. A recent theory by Jane Risen proposes that superstitions are intuitions that people acknowledge to be wrong, but acquiesce to rather than correct when they arise as the intuitive assessment of a situation. Her theory draws on dual-process models of reasoning. In this view, superstitions are

427-471: A credulous attitude towards prophecies. Greek and Roman polytheists , who modeled their relations with the gods on political and social terms, scorned the man who constantly trembled with fear at the thought of the gods, as a slave feared a cruel and capricious master. Such fear of the gods was what the Romans meant by "superstition" (Veyne 1987, p. 211). Cicero (106–43 BCE) contrasted superstitio with

488-417: A fellow worker is not available for "footing" the ladder. Footing occurs when another worker stands on the lowest rung and so provides much greater stability to the ladder when being used. However footing a ladder should be seen as a last resort for a safe placement. The anchor point is usually a ring cemented into a slot in the brick wall to which the rungs of a ladder can be attached using rope for example, or

549-475: A given culture are sometimes called superstitious; similarly, new practices brought into an established religious community can also be labeled as superstitious in an attempt to exclude them. Also, an excessive display of devoutness has often been labelled as superstitious behavior. In antiquity, the Latin term superstitio , like its equivalent Greek deisidaimonia , became associated with exaggerated ritual and

610-488: A ladder to hold it away from the wall. This enables the ladder to clear overhanging obstacles, such as the eaves of a roof , and increases the safe working height for a given length of ladder because of the increased separation distance of the two contact points at the top of the ladder. It has become increasingly common to provide anchor points on buildings to which the top rung of an extension ladder can be attached, especially for activities like window cleaning, especially if

671-506: A leg" is commonly said to actors and musicians before they go on stage to perform or before an audition . In English (though it may originate in German), the expression was likely first used in this context in the United States in the 1930s or possibly 1920s, originally documented without specifically theatrical associations. Among professional dancers , the traditional saying is not "break

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732-469: A leg", but the French word " merde ". Some superstitious actions have practical origins. Opening an umbrella inside in eighteenth-century London was a physical hazard, as umbrellas then were metal-spoked, clumsy spring mechanisms and a "veritable hazard to open indoors." Another superstition with practical origins is the action of blowing briefly left and right before crossing rail tracks for safe travels as

793-857: A noun is found in Plautus , Ennius and later in Pliny the Elder , with the meaning of art of divination . From its use in the Classical Latin of Livy and Ovid , it is used in the pejorative sense that it holds today: of an excessive fear of the gods or unreasonable religious belief; as opposed to religio , the proper, reasonable awe of the gods. Cicero derived the term from superstitiosi , lit. those who are "left over", i.e. "survivors", "descendants", connecting it with excessive anxiety of parents in hoping that their children would survive them to perform their necessary funerary rites. According to Michael David Bailey, it

854-482: A participant in the category of divination may need to go beyond mere observation and need to be active participant in a given action. Examples of divination superstitions include judicial astrology , necromancy , haruspex , lot-casting , geomancy , aeromancy and prophecy . Chardonnens says superstitions belonging to the magic category are exceedingly hermetical and ritualistic: examples include witchcraft, potions, incantations , amulets etc. Chardonnens says that

915-448: A pejorative view. Items referred to as such in common parlance are commonly referred to as folk belief in folkloristics . According to László Sándor Chardonnens, Oxford English Dictionary (OED) definitions pass value-judgement and attribution to "fear and ignorance" without doing enough justice to elaborate systems of superstitions. Chardonnens says the religious element in OED denotations

976-473: A religious background or with people who grew up in a culture that believes in magic and perform rituals. Like stated before in the article above, superstition and prophecies are sometimes linked together. People with religious or superstitious OCD may have compulsions and perform rituals or behaviors in order to fulfill or get closer to fulfilling a prophecy. Those with "magical thinking" OCD may realize that doing an action will not actually 'save' someone, but

1037-567: A room in the northwest corner of a house is "very bad". Similarly, the number 8 is a " lucky number " in China , so that it is more common than any other number in the Chinese housing market. There are many different animals around the world that have been tied to superstitions. People in the West are familiar with the omen of a black cat crossing one's path. Locomotive engineers believe a hare crossing one's path

1098-457: A sense of persistence within the individual. From a simpler perspective, natural selection will tend to reinforce a tendency to generate weak associations or heuristics that are overgeneralized. If there is a strong survival advantage to making correct associations, then this will outweigh the negatives of making many incorrect, "superstitious" associations. It has also been argued that there may be connections between OCD and superstition. It

1159-460: A superstition; Tacitus on other hand regarded Christianity as a pernicious superstition; Saul of Tarsus and Martin Luther perceived any thing that was not centered on Christ to be superstitious. According to Dale Martin, difference of opinion on what constitutes "superstition" may become apparent when one moves from one culture to another culture. While the formation of the Latin word is clear, from

1220-502: A written form was Baruch Spinoza , who was a key figure in the Age of Enlightenment. Most superstitions arose over the course of centuries and are rooted in regional and historical circumstances, such as religious beliefs or the natural environment. For instance, geckos are believed to be of medicinal value in many Asian countries, including China. In China, Feng shui is a belief system that different places have negative effects, e.g. that

1281-440: Is an electrical insulator . Henry Quackenbush patented the extension ladder in 1867. The most common injury made by ladder climbers is bruising from falling off a ladder, but bone fractures are common and head injuries are also likely, depending on the nature of the accident. Ladders can cause injury if they slip on the ground and fall. To avoid this, they tend to have plastic feet or base pads which increase friction with

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1342-673: Is at least 10,000 years old, depicted in the Spider Caves in Valencia, Spain . The painting depicts two humans using a ladder to reach a wild honeybee nest to harvest honey . The ladder is depicted as long and flexible, possibly made out of some sort of grass. Rigid ladders are available in many forms, such as: Rigid ladders were originally made of wood , but in the 20th century aluminium became more common because of its lighter weight. Ladders with fiberglass stiles are used for working on or near overhead electrical wires , because fiberglass

1403-591: Is bad luck. According to the International Union for Conservation of Nature (IUCN) the giant anteater ( Myrmecophaga tridactyla ) is targeted by motorists in regions of Brazil who do not want the creature to cross in front of them and give them bad luck. Certain numbers hold significance for particular cultures and communities. It is common for buildings to omit certain floors on their elevator panels and there are specific terms for people with severe aversions to specific numbers. Triskaidekaphobia , for example,

1464-458: Is colour-coded to indicate the amount of weight the ladder is designed to hold, the certification class and its use. The color of the safety label specifies the class and use. A common superstition in English-speaking countries is that walking under a ladder is seen as bad luck . Some sources claim that this stems from the image of a ladder being propped up against a wall looking similar to

1525-521: Is compelled to refuse the name of Roman pontiff either to the former or to the latter. The current Catechism of the Catholic Church considers superstition sinful in the sense that it denotes "a perverse excess of religion", as a demonstrated lack of trust in divine providence  (¶ 2110), and a violation of the first of the Ten Commandments . The Catechism represents a defense against

1586-453: Is not causally related to the outcomes. Both Vyse and Martin argue that what is considered superstitious varies across cultures and time. For Vyse, "if a culture has not yet adopted science as its standard, then what we consider magic or superstition is more accurately the local science or religion." Dale points out that superstitions are often considered out of place in modern times and are influenced by modern science and its notions of what

1647-559: Is not logically related to a course of events influences its outcome." Dale Martin says they "presuppose an erroneous understanding about cause and effect, that have been rejected by modern science." The Oxford English Dictionary describes them as "irrational, unfounded", Merriam-Webster as "a false conception about causation or belief or practice", and the Cambridge Dictionary as "sans grounding in human reason or scientific knowledge". This notion of superstitious practices

1708-468: Is not understood as a system of observance and testifies to a belief in higher power on part of the compiler of the dictionary. Richard Webster's The Encyclopedia of Superstitions points out that many superstitions have connections with religion, that people may hold individual subjective perceptions vis à vis superstitions against one another (people of one belief are likely to call people of another belief superstitious); Constantine regarded paganism as

1769-470: Is rational or irrational, surviving as remnants of older popular beliefs and practices. Vyse proposes that in addition to being irrational and culturally dependent, superstitions have to be instrumental; an actual effect is expected by the person holding a belief, such as increased odds of winning a prize. This distinction excludes practices where participants merely expect to be entertained. Religious practices that differ from commonly accepted religions in

1830-504: Is stated that superstition is at the end of the day long-held beliefs that are rooted in coincidence and/or cultural tradition rather than logic and facts. OCD that involves superstition is often referred to as "Magical Thinking" People with this kind of manifestation of OCD believe that if they do not follow through with a certain compulsion, then something bad will happen to either themselves or others. Superstitious OCD, while can appear in anyone with OCD, more often appears in people with

1891-461: Is the fear of the number 13. Similarly, a common practice in East Asian nations is avoiding instances of the digit 4. It represents or can be translated as death or die. This is known as tetraphobia (from Ancient Greek τετράς (tetrás)  'four' and Ancient Greek φόβος (phóbos)  'fear'). A widespread superstition is fear of the number 666, given as the number of

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1952-400: Is unknown. It is commonly applied to beliefs and practices surrounding luck , amulets , astrology , fortune telling , spirits , and certain paranormal entities , particularly the belief that future events can be foretold by specific unrelated prior events. The word superstition is also used to refer to a religion not practiced by the majority of a given society regardless of whether

2013-541: The Journal of Experimental Psychology , in which he described his pigeons exhibiting what appeared to be superstitious behaviour. One pigeon was making turns in its cage, another would swing its head in a pendulum motion, while others also displayed a variety of other behaviours. Because these behaviors were all done ritualistically in an attempt to receive food from a dispenser, even though the dispenser had already been programmed to release food at set time intervals regardless of

2074-765: The Old Testament , biblical typological allegory, the fifteen signs before Judgement Day , and the many prophecies expressed by saints ; Chardonnens further points out that since many aspects of religious experience are tied up with prophecy, the medieval church condones the same. Chardonnens says, one could differentiate between those kinds of prophecy which are (1) inspired by God or Satan and their minions; (2) "gecyndelic"; and (3) "wiglung" examples —lacking divine or infernal inspiration and not "gecyndelic" either. But practically, however, most, if not all, words relating to prophecy ought to be interpreted as inspired. Identifying something as superstition generally expresses

2135-517: The mainstream religion of his day, stating: Nec vero superstitione tollenda religio tollitur – "One does not destroy religion by destroying superstition". Diderot's 18th-century Encyclopédie defines superstition as "any excess of religion in general", and links it specifically with paganism . In his 1520 Prelude on the Babylonian Captivity of the Church , Martin Luther , who called

2196-458: The papacy "that fountain and source of all superstitions", accuses the popes of superstition: For there was scarce another of the celebrated bishoprics that had so few learned pontiffs; only in violence, intrigue, and superstition has it hitherto surpassed the rest. For the men who occupied the Roman ;See a thousand years ago differ so vastly from those who have since come into power, that one

2257-515: The 13th because of people's refusal to travel, purchase major items or conduct business. Ancient Greek historian Polybius in his Histories uses the word superstition explaining that in ancient Rome that belief maintained the cohesion of the empire , operating as an instrumentum regni . In the classical era , the existence of gods was actively debated both among philosophers and theologians, and opposition to superstition arose consequently. The poem De rerum natura , written by

2318-472: The Roman poet and philosopher Lucretius further developed the opposition to superstition. Cicero 's work De natura deorum also had a great influence on the development of the modern concept of superstition as well as the word itself. Where Cicero distinguished superstitio and religio , Lucretius used only the word religio . Cicero , for whom superstitio meant "excessive fear of

2379-410: The West include not walking under a ladder, touching wood, throwing salt over one's shoulder, or not opening an umbrella inside. In China wearing certain colours is believed to bring luck. "Break a leg" is a typical English idiom used in the context of theatre or other performing arts to wish a performer " good luck ". An ironic or non-literal saying of uncertain origin (a dead metaphor ), "break

2440-425: The accusation that Catholic doctrine is superstitious: Superstition is a deviation of religious feeling and of the practices this feeling imposes. It can even affect the worship we offer the true God, e.g., when one attributes an importance in some way magical to certain practices otherwise lawful or necessary. To attribute the efficacy of prayers or of sacramental signs to their mere external performance, apart from

2501-589: The beast in the biblical Book of Revelation . This fear is called hexakosioihexekontahexaphobia. There are many objects tied to superstitions. During the Great Depression, it was common for people to carry a rabbit's foot around with them. During the Coronavirus epidemic , people in parts of Indonesia made tetek melek, a traditional homemade mask made of coconut palm fronds, which was hung in doorways to keep occupants safe. According to superstitions, breaking

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2562-461: The cross that Christ hung from, making it a symbol of wickedness, betrayal and death. In comedic children's media, the image of a character walking under a ladder being the cause or result of bad luck has become a common trope. Superstition A superstition is any belief or practice considered by non-practitioners to be irrational or supernatural , attributed to fate or magic , perceived supernatural influence, or fear of that which

2623-441: The fear that if they do not perform a certain behavior someone could get hurt is so overwhelming that they do it just to be sure. People with superstitious OCD will go out of their way to avoid something deemed 'unlucky'. Such as the 13th floor of a building, the 13th room, certain numbers or colors, because if they do not they believe something horrible may happen. Though superstitious OCD may work in reverse where one will always wear

2684-403: The future on systematic application of given ritual and order, and moves to classify it, writing: "Prognostication seems to occupy a place somewhere between observation and divination, of which the observation of times is represented most frequently due to the primacy of temporal prognostics.. Chardonnens classifies prophecy under the topic of divination; examples including the prophets of

2745-509: The gods" wrote that " superstitio, non religio, tollenda est ", which means that only superstition, and not religion, should be abolished. The Roman Empire also made laws condemning those who excited excessive religious fear in others. During the Middle Ages, the idea of God's influence on the world's events went mostly undisputed. Trials by ordeal were quite frequent, even though Frederick II (1194 – 1250   AD )

2806-404: The ground. However, if the plastic is badly worn, the aluminium may contact the ground increasing the chance of an accident. Ladder stabilizers are also available to increase the ladder's grip on the ground. One of the first ladder stabilizers or ladder feet was offered in 1936 and today they are standard equipment on most large ladders. A ladder standoff, or stay, is a device fitted to the top of

2867-478: The interior dispositions that they demand is to fall into superstition. Cf. Matthew 23:16–22  (¶ 2111) Dieter Harmening's 1979 book Superstitio categorizes superstitions in three categories: magic , divination and observances. The observances category subdivides into "signs" and "time". The time sub-category constitutes temporal prognostics like observances of various days related like dog days , Egyptian days , year prognosis and lunaries , whereas

2928-645: The ladder foot should move one foot from the wall. Both scenarios can cause significant injury, and are especially important in industries like construction, which require heavy use of ladders. The European Union and the United Kingdom established a ladder certification system – ladder classes – for any ladders manufactured or sold in Europe. The certification classes apply solely to ladders that are portable such as stepladders and extension ladders and are broken down into three types of certification. Each ladder certification

2989-402: The luck is poured upon those entering the home. Superstitious sailors believe that nailing a horseshoe to the mast will help their vessel avoid storms. In China, yarrow and tortoiseshell are considered lucky and brooms have a number of superstitions attached to them. It is considered bad luck to use a broom within three days of the new year as this will sweep away good luck. Common actions in

3050-404: The observation category needs an observer, divination category needs a participant to tell what is to be observed, whereas magic requires a participant who must follow a protocol to influence the future, and that these three types of superstition need increasing stages of participation and knowledge. Chardonnens defines "prognostication" as that component of superstition which expects knowledge of

3111-415: The other reinforcement schedules (e.g., fixed ratio, fixed interval), these behaviours were also the most resistant to extinction . This is called the partial reinforcement effect , and this has been used to explain superstitious behaviour in humans. To be more precise, this effect means that, whenever an individual performs an action expecting a reinforcement, and none seems forthcoming, it actually creates

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3172-718: The output of "System 1" reasoning that are not corrected even when caught by "System 2". People seem to believe that superstitions influence events by changing the likelihood of currently possible outcomes rather than by creating new possible outcomes. In sporting events, for example, a lucky ritual or object is thought to increase the chance that an athlete will perform at the peak of their ability, rather than increasing their overall ability at that sport. Psychologist Stuart Vyse has pointed out that until about 2010, "[m]ost researchers assumed superstitions were irrational and focused their attentions on discovering why people were superstitious." Vyse went on to describe studies that looked at

3233-434: The pigeons' actions, Skinner believed that the pigeons were trying to influence their feeding schedule by performing these actions. He then extended this as a proposition regarding the nature of superstitious behavior in humans. Skinner's theory regarding superstition being the nature of the pigeons' behaviour has been challenged by other psychologists such as Staddon and Simmelhag, who theorised an alternative explanation for

3294-488: The pigeons' behaviour. Despite challenges to Skinner's interpretation of the root of his pigeons' superstitious behaviour, his conception of the reinforcement schedule has been used to explain superstitious behaviour in humans. Originally, in Skinner's animal research, "some pigeons responded up to 10,000 times without reinforcement when they had originally been conditioned on an intermittent reinforcement basis." Compared to

3355-592: The prevailing religion contains alleged superstitions or to all religions by the antireligious . Definitions of the term vary, but they commonly describe superstitions as irrational beliefs at odds with scientific knowledge of the world. Stuart Vyse proposes that a superstition's "presumed mechanism of action is inconsistent with our understanding of the physical world", with Jane Risen adding that these beliefs are not merely scientifically wrong but impossible. Similarly, Lysann Damisch defines superstition as "irrational beliefs that an object, action, or circumstance that

3416-666: The relationship between performance and superstitious rituals. Preliminary work has indicated that such rituals can reduce stress and thereby improve performance, but, Vyse has said, "...not because they are superstitious but because they are rituals.... So there is no real magic, but there is a bit of calming magic in performing a ritualistic sequence before attempting a high-pressure activity.... Any old ritual will do." People tend to attribute events to supernatural causes (in psychological terms, "external causes") most often under two circumstances. According to consumer behavior analytics of John C. Mowen et al., superstitions are employed as

3477-411: The signs category constitutes signs such as particular animal behaviors (like the call of birds or the neighing of horses) or the sighting of comets, or dreams. According to László Sándor Chardonnens, the signs subcategory usually needs an observer who might help in interpreting the signs and such observer does not need necessarily to be an active participant in the observation. According to Chardonnens,

3538-423: The top. The vertical members of a rigid ladder are called stringers or rails (US) or stiles (UK). Rigid ladders are usually portable, but some types are permanently fixed to a structure, building, or equipment. They are commonly made of metal, wood, or fiberglass , but they have been known to be made of tough plastic. Ladders are ancient tools and technology. A ladder is featured in a Mesolithic rock painting that

3599-428: The verb super-stare , "to stand over, stand upon; survive", its original intended sense is less clear. It can be interpreted as "'standing over a thing in amazement or awe", but other possibilities have been suggested, e.g. the sense of excess , i.e. over-scrupulousness or over-ceremoniousness in the performing of religious rites, or else the survival of old, irrational religious habits. The earliest known use as

3660-503: Was the first king who explicitly outlawed trials by ordeal as they were considered "irrational". The rediscovery of lost classical works ( The Renaissance ) and scientific advancement led to a steadily increasing disbelief in superstition. A new, more rationalistic lens was beginning to see use in exegesis. Opposition to superstition was central to the Age of Enlightenment . The first philosopher who dared to criticize superstition publicly and in

3721-468: Was with Pliny's usage that magic came close to superstition; and charges of being superstitious were first leveled by Roman authorities on their Christian subjects. In turn, early Christian writers saw all Roman and Pagan cults as superstitious, worshipping false Gods, fallen angels and demons. With Christian usage almost all forms of magic started being described as forms of superstition. In 1948, behavioral psychologist B.F. Skinner published an article in

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