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Soru

Zorluk: OrtaNecessary Assumption

Archaeologist: Excavations at the ancient settlement of Kourion revealed that immediately following a severe, decades-long drought, nearly every household installed large ceramic vats. These vats are of a specific design historically used for dyeing fabrics. Clearly, to survive the devastating loss of agricultural revenue caused by the drought, Kourion's residents transitioned to a large-scale export industry centered on dyed textiles.

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

  1. The dyed textiles produced by Kourion's residents were not used exclusively for their own local consumption.Cevap
  2. B
    Kourion's residents earned at least as much revenue from exporting dyed textiles as they had previously earned from agriculture.
  3. C
    Prior to the severe drought, none of the households in Kourion possessed ceramic vats designed for dyeing fabrics.
  4. D
    The severe drought was the only factor that motivated Kourion's residents to begin dyeing textiles.
  5. E
    The design of the ceramic vats found at Kourion was specifically developed to process the types of dyes used for export markets.

Cevap

The argument depends on the assumption that the dyed textiles produced by Kourion's residents were not used exclusively for their own local consumption.
The argument jumps from the premise that households installed dyeing vats to the conclusion that the town developed a large-scale export industry. For an export industry to exist, the goods produced must actually leave the local area. By applying the Negation Test, if the residents used the dyed textiles exclusively for their own local consumption, the conclusion that they formed an export industry completely falls apart. Therefore, this is a necessary assumption.

Adım Adım Çözüm

1
Identify the main conclusion of the argument.
The conclusion is that Kourion's residents transitioned to a large-scale export industry in dyed textiles to survive agricultural loss.
Isolating the conclusion is essential for determining what the premises must logically prove.
2
Identify the premises supporting the conclusion.
Households installed large ceramic vats of a specific design historically used for dyeing fabrics right after a severe drought.
Understanding the evidence reveals the gap between what is explicitly stated and what is concluded.
3
Identify the logical gap and formulate the necessary assumption.
The gap is between 'households installing dyeing vats' and the existence of 'an export industry'. The argument assumes the dyed goods were meant for external trade, not just local use.
A necessary assumption must bridge the logical gap or defend the argument against a fatal flaw.
4
Apply the Negation Test to the correct option to verify.
Negating the correct option yields: 'The dyed textiles were used exclusively for local consumption.' This directly contradicts the existence of an 'export industry', confirming the assumption is necessary.
The Negation Test is the definitive method on the LSAT to confirm if an assumption is strictly required.

Anahtar Kavram

Necessary Assumption and the Negation Technique
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Konular

Necessary Assumption

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