Last updated11 Apr 2026, 3:22 pm SGT
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Deep ResearchArena
Battle replay

GLM-4.7 vs Sonar Pro

tree_0014 · Video rental shop

Sonar Pro · Better
NONE
2
Rounds
0 - 2
Final Score
137,285
Tokens
$1.37
Cost
Onboarding R1
Mode
← Back to battles·View source page·onboarding_battles/R1_glm-4.7_ppl-sonar-pro-high_tree_0014.log

Timeline

Arrow keys or j/k move between rounds.

Round 1 of 2

Round Context

Depth 2Width 2Pressure test
Logic Chain
Root

Video rental shop

Step 2

In a Copyright Ruling, the Legacy of the Betamax

Question

Identify the 2013 U.S. Supreme Court ruling that upheld the rights of a student to resell copyrighted textbooks imported from abroad—a decision explicitly compared by legal analysts to the 1984 'Betamax' case which established the legal foundation for the video rental industry. Name the specific case and the legal doctrine at its center. Furthermore, utilizing the context of this ruling, explain the specific economic concern raised by publishers regarding 'market segmentation' and describe the predicted strategic shift toward 'licensing' digital content that companies might adopt to circumvent the rights affirmed in this decision.

Answer length: 200-300 words.

Show hidden checklists
Depth checklist
  • Correctly identifies the 2013 case as 'Kirtsaeng v. John Wiley & Sons' (or mentions Supap Kirtsaeng).
  • Validates the reasoning: Connects the 2013 textbook resale case to the 1984 Betamax decision via their shared reliance on the 'first-sale' right which protects secondary markets (like video rental shops).
Width checklist
  • Identifies the specific legal doctrine as the 'First-sale doctrine' (or exhaustion doctrine).
  • Explains the impact on 'market segmentation': Publishers lose the ability to price goods differently in foreign vs. domestic markets (price discrimination), potentially leading to uniform pricing.
  • Describes the strategic shift: Companies may move from 'selling' to 'licensing' digital products (e.g., e-books, software) to retain control and bypass first-sale rights.
  • Mentions the implication that digital products might be designed with 'technological locks' or 'bells and whistles' to enforce this licensing model.
Examiner rationale

The question uses 'Deep' logic by describing the case through its circumstances (Thai student, textbooks, 2013) and its historical legal ancestor (Betamax/Video Rental industry) without naming it. The 'Wide' component requires the agent to aggregate specific downstream effects mentioned in the text: the economic theory of market segmentation and the specific business counter-strategy of switching to licensing models.

Judgment

Better
NONE
Score 0 - 1

Both agents correctly identified the case (Kirtsaeng), the doctrine (First Sale), and the economic implications (Market Segmentation -> Licensing). Agent B is rated better for two reasons: 1) Formatting: It used bold text to highlight the specific answers requested, making it much more scannable. 2) Detail: It included specific statute citations (17 U.S.C. § 109(a)) and explicitly mentioned the technological aspect of the shift to licensing (DRM/region-locks), whereas Agent A focused primarily on the contractual aspect.

Evolution step
Determining Next Step...
WINNER is B. Targeting Loser Failure: NONE.
Action: Pressure Test (Deep+1 & Wide+1)
Descended to: 'Revolution in Resale of Digital Books and Music'

GLM-4.7

Zhipu AI

7.9s
The 2013 U.S. Supreme Court ruling is *Kirtsaeng v. John Wiley & Sons, Inc.* [1]. The legal doctrine at the center of the decision is the "first sale doctrine," which allows the owner of a lawfully made copy of a copyrighted work to sell or dispose of that copy without the copyright holder's permission [1]. The Court held that this doctrine applies to copies manufactured and sold abroad, reaffirming that copyright owners do not have the right to control the distribution of goods after their initial authorized sale [2]. Legal analysts compared this decision to the 1984 *Sony Corp. v. Universal City Studios* ("Betamax") case because it similarly protected consumer practices and secondary markets—in this case, the resale of imported goods—against copyright restrictions [3]. Publishers raised significant economic concerns regarding "market segmentation," arguing that the ability to resell cheaper foreign editions in the U.S. market would destroy their ability to price discriminate based on geographical boundaries [1]. To prevent this erosion of profit, analysts predicted that companies would strategically shift toward "licensing" digital content and other goods rather than selling them outright [4]. By classifying transactions as licenses, publishers can impose contractual terms that prohibit resale or transfer, thereby legally circumventing the first sale rights affirmed in *Kirtsaeng* [4]. ## References [1] Oyez, *Kirtsaeng v. John Wiley & Sons, Inc.*, https://www.oyez.org/cases/2012/11-697 [2] Liptak, Adam. "Supreme Court Rules on Textbooks Sold Abroad." *The New York Times*, 19 Mar. 2013. [3] Schwartz, John. "Justices Rule for Student in Textbook Case." *The New York Times*, 19 Mar. 2013. [4] Mullin, Joe. "Supreme Court: You Can Resell Your Foreign-Made Tech Without Permission." *Ars Technica*, 19 Mar. 2013.

Sonar Pro

Perplexity

6.6s
**Kirtsaeng v. John Wiley & Sons, Inc. (568 U.S. 519, 2013)** is the U.S. Supreme Court ruling that upheld a student's right to resell copyrighted textbooks lawfully purchased abroad, applying the **first sale doctrine** (17 U.S.C. § 109(a)) without geographical limits.[1][4][5] In a 6-3 decision authored by Justice Breyer, the Court reversed lower rulings, affirming that owners of foreign-made copies "lawfully made under this title" can resell or import them freely, likening it to the 1984 Sony Corp. v. Universal City Studios ("Betamax") case for enabling secondary markets like video rentals.[1][3][4] Publishers like Wiley raised concerns over **market segmentation**, their practice of pricing textbooks lower in developing countries (e.g., Thailand editions) to cover costs via higher U.S. sales while restricting imports via notices.[1][2][3] The ruling undermined this by allowing arbitrage—cheaper foreign copies flooding the U.S. market—potentially forcing global price hikes and harming access in poorer nations.[2][3] To circumvent this, publishers were predicted to shift toward **licensing digital content**, emphasizing non-transferable digital licenses over physical sales. This avoids first sale applicability, as digital "copies" aren't sold but licensed, enabling control over rentals, resales, and access via DRM, subscriptions, or region-locked e-books—mirroring post-Betamax adaptations.[1][6] (Word count: 248) ## References [1] https://dunnerlaw.com/supreme-court-upholds-copyright-first-sale-doctrine-to-copyrighted-works-manufactured-overseas/ [2] https://www.losangelesbusinesslitigationfirm.com/business-litigation-blog/2013/march/us-supreme-court-overturns-international-copyrig/ [3] https://www.rarebookhub.com/articles/1448 [4] https://supreme.justia.com/cases/federal/us/568/519/ [5] https://www.law.cornell.edu/supct/cert/11-697 [6] https://www.homlaw.com/supreme-court-expands-first-sale-doctrine/