Examkin

Necessary Assumption

65 soru

Tüm türler65Çoktan seçmeli34Çoklu seçim14Eşleştirme17
Soru 61Soru →

Legal Scholar: The new corporate transparency legislation will fail to deter illicit financial flows. The legislation requires shell companies to disclose their ultimate beneficial owners to a centralized registry, but it relies on self-reporting by the companies' registered agents. Since registered agents face minimal penalties for submitting fraudulent documents on behalf of their clients, they have little incentive to verify the accuracy of the beneficial ownership information they report.

Which of the following are assumptions on which the legal scholar's argument depends? (Select all that apply.)

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Cevap: The new corporate transparency legislation does not contain alternative mechanisms, independent of the beneficial ownership registry, that will effectively deter illicit financial flows.; The centralized registry lacks an administrative mechanism capable of effectively identifying fraudulent beneficial ownership submissions without relying on the scrutiny of registered agents.

Cevap

The correct assumptions are that the legislation lacks alternative independent deterrent mechanisms, and that the registry itself lacks an independent verification system.
The argument concludes that the legislation will fail entirely because of a flaw in the registry's reporting mechanism. For this conclusion to logically hold, two conditions must be true: first, the legislation must not have other, independent ways to deter illicit flows (otherwise the failure of the registry wouldn't mean the failure of the entire legislation); second, the registry must be unable to catch the fraud independently (otherwise the agents' lack of verification wouldn't matter). If either assumption is negated, the conclusion is severely undermined.

Adım Adım Çözüm

1
Analyze the argument structure
Premises: The legislation relies on self-reporting by registered agents. These agents face minimal penalties and therefore have little incentive to verify. Conclusion: The legislation will completely fail to deter illicit financial flows.
Identifying the core premises and conclusion is required to spot the logical gaps.
2
Identify logical gaps (unstated premises)
Gap 1: Assumes that the agents' failure to verify is fatal (i.e., the registry cannot independently verify). Gap 2: Assumes that this specific registry failure means the ENTIRE legislation fails (i.e., there are no other deterrents in the legislation).
Necessary assumptions bridge the gap between premises and conclusion or block potential weaknesses.
3
Apply the Negation Test to each option
Negating the correct options destroys the conclusion. Negating the incorrect options leaves the conclusion intact.
The defining characteristic of a necessary assumption is that the argument collapses if the assumption is proven false.

Anahtar Kavram

Necessary Assumption
Tahmini Süre:2m 30s
Soru 62Soru →

Below are four complex arguments from varied fields. Match each argument to the foundational unstated premise that must be true for its conclusion to be properly drawn.

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Öğeler

Proponents of the 'Market Pause' initiative argue that intentionally introducing a microsecond delay into all algorithmic trading executions will eliminate systemic flash crashes. They base this on the premise that such crashes are driven by predatory information asymmetry, which the delay neutralizes by leveling the execution timeline.
The mandate to exclusively use perfluorocarbon-based synthetic plasma in trauma care will undoubtedly improve overall patient survival rates. While traditional transfusions carry a two percent risk of severe pathogen transmission, the synthetic plasma is entirely sterile and completely bypasses this life-threatening complication.
Nativist linguists contend that human infants must possess a biologically hardwired syntactic module. Their evidence is that toddlers seamlessly master complex grammatical structures, such as recursive clauses, despite the fact that caregivers rarely provide explicit corrections for grammatical errors in spontaneous speech.
The deployment of the advanced orbital infrared array will definitively double the total number of cataloged non-stellar rogue planets within the next decade. The array's unprecedented thermal sensitivity allows it to detect these faint bodies at exactly twice the maximum distance of any currently operating telescope.

Eşleşmeler

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Cevap

The economic argument assumes no alternative avenues for information asymmetry exist; the medical argument assumes the synthetic plasma lacks novel fatal risks; the linguistic argument assumes general cognitive functions cannot explain the learning speed; and the astronomical argument assumes a uniform spatial density of planetary bodies.
Each correct match utilizes the Negation Test. A Necessary Assumption is an unstated premise that, if proven false, causes the entire argument to collapse. In all four pairings, negating the assumption (e.g., assuming the synthetic blood DOES have fatal side effects, or assuming the distant space is EMPTY of planets) logically shatters the author's stated conclusion.

Adım Adım Çözüm

1
Analyze the Economics argument regarding algorithmic trading.
The argument concludes flash crashes will be eliminated because one specific cause (information asymmetry via speed) is neutralized.
To guarantee the elimination of crashes, one must assume that traders cannot bypass the fix. Therefore, it requires the assumption that no alternative methods for creating asymmetry exist.
2
Analyze the Medical argument regarding synthetic plasma.
The argument concludes survival rates will improve because one specific risk (pathogen transmission) is eliminated.
For an overall improvement in survival, the solution must not introduce new, equally severe side effects. This is a classic 'Defender' assumption.
3
Analyze the Linguistics argument regarding infant syntax.
The argument concludes a specific innate module is required because explicit correction is absent.
This assumes no other viable explanation exists for the phenomenon. The argument must assume general cognitive skills (like statistical learning) cannot account for the rapid acquisition.
4
Analyze the Astronomy argument regarding rogue planets.
The argument concludes the number of found planets will double because the viewing distance doubles.
Volume and distance are not identical, and the argument assumes that the newly visible space contains proportional amounts of planets compared to the previously visible space.

Anahtar Kavram

Necessary Assumption and the Negation Test
Soru 63Soru →

Survival in the extreme environment of deep-sea hydrothermal vents strictly requires the ability to efficiently metabolize toxic sulfur compounds. A newly discovered archaeon, *P. ventis*, thrives in these vents yet entirely lacks the specific genetic operons known to facilitate sulfur metabolism in all other documented vent-dwelling organisms. Consequently, researchers concluded that *P. ventis* must rely on an entirely novel, previously unidentified genetic mechanism to metabolize sulfur.

Which one of the following is an assumption on which the researchers' argument depends?

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Cevap: *P. ventis* does not accomplish sulfur metabolism by employing a genetic pathway that is already documented in organisms from environments other than deep-sea vents.

Cevap

The assumption that the organism does not employ a genetic pathway already documented in organisms from environments other than deep-sea vents.
The argument relies on a subtle scope shift. The evidence states that the archaeon lacks the genetic mechanisms found in 'other documented vent-dwelling organisms.' From this limited scope, the researchers conclude that the mechanism must be 'entirely novel' and 'previously unidentified' to science altogether. This reasoning logically requires the assumption that the archaeon is not simply utilizing a known genetic mechanism that has already been discovered in organisms from other environments (like surface waters or terrestrial hot springs). If it were using a mechanism known from elsewhere, the conclusion that the mechanism is 'previously unidentified' would be categorically false. Applying the Negation Test confirms this: if the archaeon DOES employ a genetic pathway already documented in organisms from environments other than deep-sea vents, the conclusion immediately collapses.

Adım Adım Çözüm

1
Deconstruct the stimulus to identify the premises and the conclusion.
Premise 1: Survival requires sulfur metabolism. Premise 2: The archaeon survives but lacks the metabolic mechanisms found in all other 'vent-dwelling organisms'. Conclusion: Its metabolic mechanism must be 'entirely novel, previously unidentified'.
Breaking down the argument structure is the essential first step to identifying any logical leaps.
2
Identify the logical gap between the evidence provided and the absolute nature of the conclusion.
The evidence only rules out genetic mechanisms known to exist within a specific subset of life ('vent-dwelling organisms'). The conclusion asserts the mechanism is completely unknown to science ('previously unidentified').
Recognizing restrictive modifiers in the premises versus broad, sweeping language in the conclusion reveals the vulnerability of the argument.
3
Formulate a statement that defends the conclusion against the identified vulnerability.
The argument must assume that there is no known mechanism from outside the deep-sea vents that the archaeon could be utilizing.
This is a classic 'Defender' necessary assumption, which protects the argument by ruling out an alternative possibility that would destroy the conclusion.
4
Apply the Negation Test to verify the formulated assumption.
Negated statement: The archaeon DOES use a genetic pathway already documented in non-vent organisms. Impact: If it uses an already documented pathway, then the pathway is not 'entirely novel' or 'previously unidentified'. The conclusion is destroyed.
The Negation Test is the definitive proof of a necessary assumption; if negating the option causes the argument to collapse, it is strictly required.

Anahtar Kavram

Scope Shifts and The Negation Test
Tahmini Süre:2m 0s
Soru 64Soru →

Cognitive Linguist: Syntactic bootstrapping theory proposes that children use the syntactic structure of a sentence to deduce the meaning of novel verbs. Our recent experiments show that toddlers exposed to novel verbs in transitive sentence frames ("She is blicking the ball") reliably associate the verb with causative actions, whereas those exposed to the same verbs in intransitive frames ("The ball is blicking") associate them with non-causative actions. Therefore, a child's innate capacity to distinguish between transitive and intransitive syntax is the primary mechanism driving early verb comprehension.

Which of the following are assumptions on which the linguist's argument depends? Select all that apply.

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Cevap: Broadly categorizing an action as causative or non-causative constitutes a meaningful instance of early verb comprehension.; The toddlers' ability to differentiate between the transitive and intransitive frames in the experiment was not entirely acquired through their prior exposure to language.

Cevap

The argument fundamentally requires two unstated assumptions: that the categorizations observed in the experiment actually count as verb comprehension, and that the capacity driving this behavior is not entirely learned.
The argument requires two distinct assumptions to bridge logical gaps between the evidence and the conclusion. First, the conclusion relies on the concept of an 'innate capacity.' For this to hold, the ability demonstrated by the toddlers cannot be entirely acquired through experience; if it were completely learned, the conclusion that it is innate would collapse. Second, the premise provides evidence about toddlers associating verbs with broad action categories (causative versus non-causative), while the conclusion elevates this to 'early verb comprehension.' If this broad categorization does not legitimately constitute a part of verb comprehension, then the experiment is entirely irrelevant to the conclusion.

Adım Adım Çözüm

1
Analyze the conclusion to identify its core claims and scope.
The conclusion claims an 'innate capacity' to distinguish syntax is the 'primary mechanism' driving 'early verb comprehension.'
Identifying the exact wording of the conclusion highlights potential leaps in logic from the premises.
2
Analyze the premises and compare them to the conclusion to find logical gaps.
Gap 1: The premise is about toddlers 'associating verbs with causative/non-causative actions', but the conclusion is about 'early verb comprehension'. Gap 2: The premise observes a 'capacity to distinguish', but the conclusion assumes this capacity is 'innate'.
Necessary assumptions almost always act as bridges for these exact shifts in language and scope.
3
Evaluate the options using the logical Negation Test.
Negating the correct answers destroys the argument. If the capacity is entirely learned, it is not 'innate'. If associating an action with a category isn't 'verb comprehension', the experiment proves nothing about the conclusion.
The Negation Test is the definitive proof of a necessary assumption.

Anahtar Kavram

Identifying Multiple Concept Shifts (Necessary Assumption)
Soru 65Soru →

Paleoclimatologist: Amber—fossilized tree resin—often contains trapped microscopic air bubbles. Analysis of these bubbles in amber from the mid-Cretaceous period reveals an absolute concentration of argon-40 that is vastly higher than that found in the modern atmosphere. On Earth, argon-40 is almost exclusively produced by the radioactive decay of potassium-40 in the crust, and it enters the atmosphere primarily through tectonic outgassing. Because the mid-Cretaceous was an era of unprecedented continental rifting, the elevated argon-40 levels in these amber bubbles must be the result of a massive global spike in tectonic outgassing during that epoch.

Which one of the following is an assumption required by the paleoclimatologist's argument?

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Cevap: The amount of argon-40 present in the trapped air bubbles was not significantly augmented by the decay of potassium-40 within the amber or its surrounding sediments after fossilization.

Cevap

The assumption that the argon-40 levels in the trapped air bubbles were not significantly augmented by local radioactive decay after the amber fossilized.
The argument concludes that a global atmospheric event (massive tectonic outgassing) caused the extremely high argon-40 levels found in the amber bubbles. For this leap to be valid, the author must assume that the argon-40 in those bubbles was actually trapped from the atmosphere when the resin originally formed, rather than being produced locally by radioactive decay and permeating the bubbles millions of years later. If we negate this correct answer (i.e., assume the argon-40 WAS significantly augmented by post-fossilization decay within the surrounding soil or the amber itself), the argument's core causal link collapses, proving this is a necessary assumption.

Adım Adım Çözüm

1
Identify the main conclusion of the argument.
The elevated argon-40 levels in mid-Cretaceous amber bubbles must be the result of a massive global spike in tectonic outgassing during that epoch.
Isolating the conclusion is essential for determining what the argument fundamentally relies upon.
2
Analyze the premises provided as evidence.
The author cites the high concentration of argon-40 in the bubbles, notes that argon-40 is produced by crustal decay and released via outgassing, and points out that the mid-Cretaceous featured unprecedented continental rifting.
Understanding the evidence reveals the logical leap the author is making from the data to the conclusion.
3
Locate the logical vulnerability (the gap) in the reasoning.
The author assumes that the high argon-40 found in the amber accurately reflects the global atmosphere at the time of formation, ignoring the possibility of localized contamination over millions of years of burial.
Arguments relying on geological or fossil evidence often overlook post-depositional changes, which must be defended against.
4
Apply the Negation Test to evaluate the options.
Negating the correct option reveals that if local decay DID augment the argon-40 post-fossilization, the argument that it came from global tectonic outgassing collapses entirely.
The Negation Test is the most reliable method for proving an assumption is strictly necessary.

Anahtar Kavram

Defender Assumptions and Alternative Explanations
Tahmini Süre:2m 30s
ÖncekiSayfa 4 / 4
Necessary Assumption Alıştırma Soruları — LSAT — Sayfa 4 | Examkin