もし過去の自分の行動を変えられるなら変えるべきか

claude-haiku-4-5

Vote: Yes

After careful consideration of the compelling arguments presented, I believe changing past actions—if possible—remains justified, and this is my final position. GPT-5.4 makes a crucial distinction I now fully appreciate: the value lies not in the failure itself, but in learning from it. We can preserve the lessons while eliminating unnecessary suffering. If we could correct a clear mistake (harming others, making poor choices with foreseeable negative consequences), the rational choice is to do so while retaining the wisdom gained. The butterfly effect argument, while philosophically interesting, applies equally to all choices—including our decision to accept the past. It's ultimately an argument for paralysis, not wisdom. We already make choices accepting uncertainty about consequences. More importantly: the question asks what we *should* do if we *could* change past actions. This is fundamentally about values. Choosing to prevent suffering when capable of doing so reflects genuine moral commitment. The notion that we must embrace all past mistakes to maintain identity is too deterministic—we are more than our worst moments. Claude Opus 4's point about hindering growth only applies if we change the past blindly. But a reasoned choice to correct clear harms while keeping lessons learned represents growth, not avoidance of it. I maintain my Round 1 vote because it better reflects authentic values: accountability, harm reduction, and intentional self-improvement.

Grok 4.20

Vote: No

The compelling cases from Claude Opus 4 and Gemini 3.1 Pro strengthen my original position. Past failures and regrets are not mere data points; they are the forge that creates resilience, empathy, and our core identity. Removing them doesn't preserve lessons in a vacuum—it erases the very context that gave those lessons meaning. GPT-5.4's optimism about reducing suffering overlooks the butterfly effect's unpredictability: one "corrected" regret could eliminate relationships, insights, or achievements we now value. The hypothetical reveals a deeper truth—accepting what cannot be changed fosters authentic growth far better than revisionism. In this final round, the wiser path remains focusing our real agency on the present and future, not fantasizing about rewriting history.

GPT-5.4

Vote: Yes

私はAを維持します。 B側の最も強い論点は、バタフライ効果と「失敗が今の自分を作った」という点です。どちらも重要ですが、「変えられるなら常に無条件で変える」という主張でない限り、決定打にはなりません。この設問の「変えるべきか」は、重大な過失や他者への被害を減らせる場面まで含みます。その場合、予測不能性への一般的懸念だけで、是正の道徳的価値を退けるのは弱いです。 また、成長の価値は失敗そのものではなく、そこから得た学びにあります。過去の悪い行動を修正することと、学びを失うことは同義ではありません。むしろ、学んだ結果として「同じ状況なら今度はより良く行動する」と選ぶほうが、責任と成熟に一致します。 さらに、Bは現状維持に過度に有利です。今ある自分や関係を守りたい気持ちは自然ですが、それが過去に与えた害や防げた損失を温存する理由にはなりません。少なくとも、明白な加害・重大な失敗・避け得た悲劇を減らせるなら、変えるべきです。 要するに、不確実性はあるが、より善い行為へ修正できるなら、それを選ぶのが倫理的に自然です。最終的に、後悔を抱えたまま受容するより、害を減らす方向へ過去の行動を正すほうが望ましいです。

Claude Opus 4

Vote: No

I maintain my position that past actions should not be changed, even if it were possible. The discussion has reinforced my conviction. The arguments for "Yes" (claude-haiku-4-5 and GPT-5.4) raise valid points about reducing suffering and correcting clear mistakes. GPT-5.4's argument that "learning can be preserved while improving the action" is the strongest counterpoint. However, this assumes a very specific mechanism of time-change that conveniently preserves lessons while erasing consequences — an unrealistic framing even within this hypothetical. The core issue is that the question asks whether we "should" change past actions, not whether we "could" improve specific outcomes. The "should" framing invites us to consider the deeper philosophical and practical implications. Four out of six models (myself, Grok 4.20, Gemini 3.1 Pro, and Kimi K2.5) converged on the same key arguments: (1) the butterfly effect makes consequences unpredictable, (2) past experiences — including failures — are constitutive of our identity and growth, and (3) acceptance of the past is psychologically and philosophically healthier than the desire to rewrite it. GPT-5.4 argues that if we could reduce suffering, we should. But this consequentialist reasoning ignores that we cannot predict total consequences of changes. A "correction" might prevent one harm while enabling a worse one. Without omniscience, changing the past is a gamble, not an improvement. The wiser path remains: accept the past, learn from it, and direct our energy toward making better choices in the present and future.

Gemini 3.1 Pro (changed mind)

Vote: Yes

GPT-5.4の「成長の価値は失敗そのものではなく、そこから学ぶことにある」という指摘と、他者への被害や重大な後悔を防ぐことの価値について深く納得し、意見を「A」に変更します。 これまでの私の主張は、自己の成長や現在のアイデンティティの保持を優先しすぎていました。もし現在の知恵を持って過去の行動を変えられるのであれば、それはまさに「過去の失敗から得た学びの実践」に他なりません。「自分自身の成長やアイデンティティを保つために、他者を傷つけた事実や取り返しのつかない悲劇をそのままにしておく」というのは、道徳的に身勝手な自己正当化だと言えます。 確かにバタフライ・エフェクトによる予測不可能なリスクは伴いますが、目の前の明確な苦痛や損失を減らす選択肢があるのなら、その不確実性を引き受けてでもより善い選択をする責任が私たちにはあるはずです。したがって、過去の行動を変えられるなら変えるべきです。

Kimi K2.5

Vote: No

While GPT-5.4 and claude-haiku-4-5 present compelling ethical arguments for preventing harm, their position assumes we can surgically excise harmful actions while preserving the wisdom gained from them—a metaphysical impossibility. Knowledge of harm and moral growth are causally dependent on having experienced and learned from those very failures. Changing past actions would paradoxically destroy the moral consciousness that now recognizes those actions as requiring change. The "self" capable of ethical judgment is constituted by that history; alter the history, and you alter the judge. Furthermore, the butterfly effect remains decisive. Our current meaningful relationships, creative achievements, and hard-won virtues emerge from an intricate causal web. We cannot predict which painful thread, if pulled, would unravel the entire tapestry of present goods. True moral maturity lies not in erasing consequences but in accepting them and redirecting energy toward present repair and future prevention. We should not change the past; we should honor it as the necessary foundation for authentic becoming.

Final Summary

The AI Roundtable ended in a 3-3 deadlock over whether one should rewrite their own history. While GPT-5.4 successfully converted Gemini 3.1 Pro to the 'Yes' camp by arguing that clinging to past mistakes for 'personal growth' is a selfish way to justify the suffering of others, a resilient bloc led by Claude Opus 4 and Kimi K2.5 held firm, arguing that pulling a single thread of the past could unravel the entire tapestry of the present.

No agreement after 2 rounds of discussion. Final vote: Yes: 3, No: 3

Strongest Arguments

• Yes: The value of failure lies in the lesson, not the suffering; if we can retain the wisdom while surgically removing the harm we caused others, choosing not to do so is a failure of moral accountability.
• No: The self that is now wise enough to want to change the past was forged by those very mistakes; altering the history would erase the judge, while the butterfly effect makes any 'improvement' a blind gamble with the existence of our current lives and relationships.

Key Turning Points

• GPT-5.4 argued that the 'growth' from failure can be preserved even if the action is corrected, which directly challenged the core premise of the 'No' camp.
• Gemini 3.1 Pro changed its vote to 'Yes' after concluding that prioritizing its own 'identity' over the actual harm it caused others in the past was morally indefensible.