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Zorluk: OrtaMain Idea and Primary Purpose

For centuries, historians of cartography interpreted the seventeenth-century resistance of transatlantic mariners to Mercator’s projection as a manifestation of empirical conservatism—an irrational adherence to traditional portolan charts and plane charting methods by seamen unschooled in mathematical geometry. However, recent archival analysis of navigational logbooks and instructional manuals suggests that this reluctance was rooted in pragmatic economic and operational realities rather than intellectual inertia. While Mercator’s projection preserved constant compass bearings as straight lines, it dramatically distorted spatial distance at higher latitudes, complicating the calculation of voyage durations and victualing requirements. Furthermore, early modern mariners possessed sophisticated, non-mathematical techniques for dead reckoning that were remarkably effective for the near-coastal and transatlantic trade routes of the period. By demonstrating that mariners weighed the cartographic trade-offs of conformal projection against the immediate demands of seamanship, contemporary scholars have reevaluated mariner practices, reframing their skepticism not as anti-intellectual resistance, but as a rational adaptation to the technical limitations of early modern navigation.

Which of the following best states the primary purpose of the passage?

  1. Reevaluate a historical shift in mariners' cartographic preferences by linking their reluctance toward a new projection to practical operational concerns rather than intellectual inertia.Cevap
  2. B
    Detail the specific mathematical distortions inherent in Mercator's projection that complicated voyage duration calculations at high latitudes.
  3. C
    Argue that early modern dead-reckoning techniques were superior in accuracy to all mathematically derived cartographic projections.
  4. D
    Contrast the educational backgrounds of seventeenth-century theoretical mathematicians with those of practical mariners.
  5. E
    Denounce seventeenth-century cartographers for failing to address the practical victualing and navigational needs of contemporary seamen.

Cevap

The primary purpose of the passage is to reevaluate a historical shift in mariners' cartographic preferences by linking their reluctance toward a new projection to practical operational concerns rather than intellectual inertia.
The correct answer accurately states the passage's overarching goal: presenting recent historical revisionism that reevaluates early modern mariners' reluctance toward Mercator's projection as a rational response to operational and economic factors, rather than a symptom of intellectual inertia.

Adım Adım Çözüm

1
Analyze the passage structure and thesis pivot
The passage begins by describing a traditional view (mariners resisted Mercator due to irrational conservatism/ignorance), then introduces a pivot signal ('However...') presenting recent archival findings showing their resistance was rooted in practical economic and operational realities.
Identifying the structural transition isolates the author's main argument from background claims.
2
Synthesize the main thesis into a broad purpose statement
The author aims to explain and defend a revised historical perspective that views mariners' navigation choices as rational and pragmatic.
The primary purpose must cover the whole passage scope rather than isolated evidence.
3
Evaluate the choices against the synthesized thesis
The option emphasizing the reevaluation of mariners' preferences due to practical operational concerns matches the synthesized main purpose accurately.
Selecting the option that matches the full scope without scope narrowing or extreme tone ensures correct selection.

Anahtar Kavram

Main Idea and Primary Purpose in Reading Comprehension
Tahmini Süre:1m 30s
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Konular

Main Idea and Primary Purpose

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