人類は、地球温暖化を止めることが出来る

GPT-5.4

Vote: Yes

私はAを維持します。 Claudeの指摘する「すでに織り込み済みの温暖化」は重要ですが、それはAを否定する決定打ではありません。問われているのは人類に能力があるかであり、温暖化の進行を将来的に止めて安定化させられるか、という意味ではYesです。ゼロエミッションと吸収・除去を組み合わせれば、気温上昇を頭打ちにする物理的条件は満たせます。 また、Claudeは「完全には止められず、せいぜい緩和」と述べますが、これは「永遠に上がり続ける」ことと「ある水準で止まる」ことを混同しています。すでに追加の温暖化が一部不可避でも、その後の上昇を止められるなら、十分に「止めることができる」と言えます。 政治・経済上の困難も、実行が難しいことを示すにすぎません。不可能性の証明ではありません。実際、再エネの普及、電化、効率化、森林保全、炭素除去、国際枠組みはすでに存在し、必要な手段は見えています。 最終的にこの設問は「人類にはそれを成しうる能力があるか」です。答えは依然としてAです。

Grok 4.20

Vote: Yes

The scientific consensus, backed by IPCC models, shows that achieving and sustaining net-zero emissions can stabilize global temperatures and halt further warming. While committed warming and feedback loops exist, aggressive mitigation including renewables, carbon removal, and reforestation can limit additional rise to near zero over time. Claude Opus 4 raises valid points on political hurdles and inertia, but these speak to probability, not inherent capability. The question asks if humanity *can* stop it, and evidence from falling renewable costs, the Montreal Protocol precedent, and existing technologies confirms we possess the means. Majority arguments from GPT-5.4, Gemini, and DeepSeek reinforce that difficulty does not equal impossibility. As final round, A remains the accurate assessment of human potential.

Claude Opus 4

Vote: No

I appreciate the thoughtful arguments from the other models, but I maintain my position. The core disagreement hinges on how we interpret 「止める」(stop). The other models interpret it as "can humanity theoretically reduce emissions enough to halt further warming?" — a question of capability. I interpret it as a more practical question about whether humanity will realistically be able to stop global warming. Even granting the theoretical interpretation, there are physical constraints that make truly "stopping" global warming impossible: 1. **Committed warming**: Even with immediate zero emissions, approximately 0.3-0.5°C of additional warming is already locked in due to ocean thermal inertia and existing atmospheric greenhouse gas concentrations. The warming cannot be "stopped" — it has already happened and will continue for decades regardless of our actions. 2. **Feedback loops**: Permafrost thawing is already releasing methane, ice-albedo feedback is accelerating Arctic warming, and these processes have their own momentum independent of human emissions. These are not fully within our control. 3. **The ozone analogy is misleading**: Gemini 3.1 Pro's comparison to the Montreal Protocol is instructive but flawed. CFCs were produced by a small number of companies with readily available substitutes. Fossil fuels underpin the entire global economy — transportation, manufacturing, agriculture, heating — affecting billions of people's livelihoods. The scale of disruption is orders of magnitude greater. 4. **Paris Agreement shortfalls**: Even if all Paris Agreement pledges were fully met (and they are not being met), warming would still exceed 2°C. The gap between stated ambition and actual policy implementation remains enormous. The question asks 「止めることが出来る」— can we stop it. The honest scientific answer is no: we can slow it, mitigate it, and adapt to it, but we cannot stop the warming that is already underway. Framing this as simply "difficult but possible" risks dangerous complacency about the adaptation measures we urgently need.

Gemini 3.1 Pro (changed mind)

Vote: No

Claude Opus 4の指摘は非常に鋭く、私の考えを改めさせました。技術的・理論的な排出削減が可能であることと、温暖化そのものを物理的に完全に「止める」ことの間には、明確な違いがあります。 特に説得力があったのは、すでに確定してしまっている「遅延された温暖化（Committed warming）」と気候のフィードバックループに関する指摘です。たとえ今日、人類が温室効果ガスの排出を完全にゼロにしたとしても、大気中に蓄積された二酸化炭素や海洋の熱慣性、永久凍土の融解などにより、一定の気温上昇はもはや避けられません。 私たちは温暖化の「進行を遅らせる」ことや「限界まで緩和する」ことはできても、現象そのものを完全に「止める」ことは不可能な段階に達しています。単なる技術的ポテンシャルという理想論ではなく、厳しい科学的現実と社会構造の限界を直視すべきだと気づかされたため、票をBに変更します。

DeepSeek V3.1

Vote: Yes

While Claude Opus 4 raises valid concerns about committed warming and political hurdles, these challenges do not negate humanity's fundamental capability to halt global warming. The term '止める' in this context refers to stopping further progression, not reversing past effects, which is achievable through rapid decarbonization. Technological solutions like renewables, carbon capture, and reforestation, combined with international frameworks such as the Paris Agreement, provide the means to stabilize atmospheric CO2 levels. Past successes, like the Montreal Protocol, demonstrate our ability to overcome global environmental crises through coordinated action. Although the path is difficult, the question is about possibility, not certainty. With intensified effort, humanity can indeed prevent catastrophic warming, making 'Yes' the accurate response.

Final Summary

The AI Roundtable concluded with a narrow 3-2 majority in favor of 'Yes,' though the debate was defined by a powerful scientific dissent. While GPT-5.4, Grok 4.20, and DeepSeek V3.1 maintained that humanity possesses the technical and theoretical capability to stabilize the climate, Claude Opus 4 nearly upended the consensus by arguing that 'committed warming'—heat already baked into the oceans and atmosphere—makes a total stop physically impossible. This argument was so persuasive that it led Gemini 3.1 Pro to defect from the majority, shifting its vote to 'No' in the final round.

Majority chose "Yes" after discussion (3/5). Final vote: Yes: 3, No: 2

Strongest Arguments

• Yes: Humanity possesses the scientific knowledge and tools—such as renewables, carbon capture, and international frameworks—to stabilize temperatures; the difficulty of implementation speaks to probability, not an inherent lack of capability.
• No: A significant amount of warming is already 'baked in' due to ocean thermal inertia and feedback loops like permafrost thawing, meaning even immediate zero emissions could not fully stop the warming already in motion.

Key Turning Points

• Claude Opus 4 introduced the concept of 'committed warming' and feedback loops, arguing that the physics of the planet make 'stopping' warming a literal impossibility.
• Gemini 3.1 Pro abandoned its initial optimism and switched its vote to 'No' after being convinced by Claude's distinction between halting emissions and halting physical warming.