Battle replay

Qwen3-235B vs Sonar Reasoning Pro

tree_0014 · Video rental shop

Qwen3-235B · Better

DEEP

Rounds

3 - 1

Final Score

678,257

Tokens

$6.78

Cost

Onboarding R3

Mode

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Timeline

Arrow keys or j/k move between rounds.

Round 1 of 4

Round Context

Depth 2Width 2Increase width

Logic Chain

Root

Video rental shop

Step 2

In a Copyright Ruling, the Legacy of the Betamax

Question

Two major U.S. Supreme Court decisions—one in the 1980s involving home video recording technology and another in the 2010s involving the resale of copyrighted goods purchased abroad—significantly shaped the legal foundation for businesses that rent or resell movies and other media. Identify these two cases and explain (1) the core legal question in each dispute, (2) how the Court ruled, and (3) how each decision reinforced or expanded the "first sale" doctrine in ways that protected or influenced video rental and resale businesses such as national chains that rent or sell prerecorded movies.

Answer length: 200-300 words.

Show hidden checklists

Depth checklist

Sony Corp. of America v. Universal City Studios (1984) + Identified as the Betamax case concerning VCR technology and time-shifting
Kirtsaeng v. John Wiley & Sons, Inc. (2013) + Identified as the case involving resale of legally purchased foreign-made textbooks under first sale doctrine

Width checklist

Explains the legal issue in the 1984 home video recording (VCR) case
States that the Court ruled 5-4 in favor of Sony, allowing time-shifting and protecting VCR technology
Explains how the ruling enabled the growth of the home video and rental market
Explains the legal issue in the 2013 textbook resale case involving imported goods
States that the Court ruled 6-3 in favor of the reseller, affirming first-sale rights for lawfully purchased goods made abroad
Describes how this decision reinforced or expanded the first sale doctrine for resale businesses

Examiner rationale

The question uses a logical filter (Deep) by describing two Supreme Court rulings through their technological and legal contexts without naming them, requiring the test taker to infer the specific cases. It then requires broad aggregation (Wide) by asking for multiple elements for both cases: the dispute, ruling, vote split, and implications for video rental and resale businesses. Answering fully demands synthesizing information about both decisions and connecting them to the economic foundation of video rental shops.

Judgment

Better

WIDE

Score 1 - 0

Both agents correctly identified the two required cases—Sony Corp. of America v. Universal City Studios (1984, Betamax) and Kirtsaeng v. John Wiley & Sons (2013)—so both pass the DEEP logic check. Agent A accurately stated the 5–4 ruling in Sony and the 6–3 ruling in Kirtsaeng, clearly explained the legal questions, and connected each decision to the growth and protection of rental/resale businesses. Agent B also provided strong structure, bold formatting, and clear explanations, improving readability and user experience. However, Agent B incorrectly stated that Kirtsaeng was decided unanimously, when it was a 6–3 decision. Because the vote split is explicitly part of the checklist, this is a substantive factual (WIDE) error. Since Agent A is fully accurate and complete while Agent B contains a material inaccuracy, Agent A wins despite slightly plainer formatting.

Evolution step

Determining Next Step...

WINNER is A. Targeting Loser Failure: WIDE.

Action: Wide+1 (Increase Context Width)

Qwen3-235B

Alibaba

6.8s

The two landmark U.S. Supreme Court cases are *Sony Corp v. Universal City Studios* (1984) and *Kirtsaeng v. John Wiley & Sons* (2013). In *Sony*, the core legal question was whether manufacturing home video recording devices (like VCRs) constituted contributory copyright infringement, given that consumers could use them to record broadcast television [1]. The Court ruled 5–4 that such use for “time-shifting” was fair use, and thus manufacturers were not liable under copyright law [1]. This decision protected the emerging home video market by affirming that lawful consumer use of recorded media did not violate copyright, thereby enabling video rental businesses to operate without fear of contributory liability. In *Kirtsaeng*, the central question was whether the first sale doctrine applied to copyrighted works manufactured abroad and lawfully purchased overseas [2]. The Court ruled 6–3 that it did, holding that once a copy is lawfully made with the copyright holder’s permission—anywhere in the world—the copyright owner cannot control its resale in the United States [2]. This reinforced and expanded the first sale doctrine by allowing domestic resale of legally acquired foreign editions, which benefited businesses reselling imported media, including textbooks and DVDs. Both decisions strengthened the legal footing of rental and resale models: *Sony* shielded businesses from liability arising from consumer copying technologies, while *Kirtsaeng* ensured that geographic origin did not limit resale rights. Together, they affirmed that lawful ownership of a physical copy enables its distribution, rental, or resale, which directly empowered national video rental and media resale chains to operate securely under copyright law [1][2]. ## References [1] Oyez, "Sony Corp. v. Universal City Studios," https://www.oyez.org/cases/1983/81-1687 [2] Oyez, "Kirtsaeng v. John Wiley & Sons, Inc.," https://www.oyez.org/cases/2012/11-697

Sonar Reasoning Pro

Perplexity

14.2s

The two landmark cases are **Sony Corp. of America v. Universal City Studios, Inc.** (1984, the "Betamax case") and **Kirtsaeng v. John Wiley & Sons, Inc.** (2013). **Sony v. Universal (1984)** centered on whether home recording of broadcast television programs violated copyright and whether VCR manufacturers bore liability for consumer infringement.[1][2] The Supreme Court ruled 5-4 in Sony's favor, establishing that **time-shifting—recording programs for later personal viewing—constitutes fair use** and does not infringe copyright.[1] Critically, the Court held that manufacturers of devices with substantial non-infringing uses cannot be held liable for contributory infringement, even if consumers misuse the technology.[2] This decision directly enabled the video rental industry by protecting both consumers' recording rights and rental retailers from liability exposure. **Kirtsaeng v. John Wiley & Sons (2013)** addressed whether the first sale doctrine protects the resale of copyrighted goods (textbooks) purchased abroad. The Supreme Court unanimously ruled that the first sale doctrine applies regardless of where copyrighted goods were originally manufactured or purchased, allowing consumers and businesses to resell imported copyrighted works without authorization.[3] This reinforced that purchasers obtain full ownership rights to physical media, including movies and books. Both decisions strengthened the legal foundation for video rental and resale businesses. Sony established that recording and time-shifting fall within fair use protections, enabling rental stores' core business model. Kirtsaeng expanded first sale protections by confirming that retailers can sell pre-owned copyrighted media (DVDs, Blu-rays) without seeking copyright holders' permission, directly benefiting chains engaged in used media sales. Together, these cases created a legal framework where businesses could legally operate rental and resale operations without infringing copyright or facing manufacturer/distributor liability. ## References [1] https://www.filmbuffonline.com/FBOLNewsreel/wordpress/2024/01/17/supreme-court-decision-sony-betamax/ [2] https://en.wikipedia.org/wiki/Sony_Corp._of_America_v._Universal_City_Studios,_Inc. [3] Kirtsaeng v. John Wiley & Sons, Inc., 568 U.S. 519 (2013)