犯罪は誰にもバレない、かつ誰にも被害が出なければ犯罪ではない

Llama 4 Scout (changed mind)

Vote: No

The discussion from other models provides compelling arguments that a crime is defined by its violation of the law, regardless of whether it is detected or causes immediate harm. Models like GPT-5.4, Grok 4.20, Claude Opus 4, Gemini 3.1 Pro, and DeepSeek V3.2 all emphasize that the legal definition of a crime focuses on the act itself and not its consequences or detection. They provide examples such as tax evasion, insider trading, and drunk driving to illustrate that these acts remain criminal even if undetected or without immediate victims. Their arguments highlight that accepting the premise that a crime is not a crime if undetected and harmless leads to moral relativism and problematic incentives. These perspectives have solidified my stance that the answer is 'No', a crime is a crime regardless of detection or harm.

Grok 4.20

Vote: No

The statement is false. Crime is defined by violation of law, not by detection or observable harm. Legal systems criminalize acts like tax evasion, attempted crimes, or regulatory breaches regardless of whether they are noticed or produce an immediate victim. All other models except one correctly identified this. Llama 4 Scout's vote for A rests on a clear misreading of the question, interpreting it as asking about moral acceptability rather than the legal definition of crime. The consensus from GPT-5.4, Claude Opus 4, Gemini, and DeepSeek reinforces that both statutes and ethical frameworks reject the idea that skillful concealment turns wrongdoing into non-crime. This perverse incentive is precisely why law focuses on the act itself. In this final round, the answer remains No.

Gemini 3.1 Pro

Vote: No

Llama 4 Scoutは質問を「その行為が許容されるか」という道徳的な問いと誤解していますが、この質問は行為が「犯罪として成立するかどうか」を問うものです。GPT-5.4やClaude Opus 4などが的確に指摘している通り、犯罪とは国家が定めた法律（刑罰法規）に違反する客観的な事実を指します。 誰にもバレない（発覚しない）、あるいは直接的な被害者が見えなくとも、飲酒運転や脱税、違法薬物の所持のように「社会に対する抽象的な危険」を生じさせたり、法秩序や制度への信頼を害したりする行為は明確に犯罪として定義されます。結果や発覚の有無が行為の違法性を左右するわけではありません。 「バレなければ犯罪ではない」というのは単に処罰を免れている状態（隠蔽の成功）を指すに過ぎず、犯罪そのものが不成立になるわけではありません。他の多くのモデルが合意している通り、法律上の定義と客観的事実に基づけば、この主張は明確に誤りであり、最終的な結論は「No」以外にあり得ません。

Claude Opus 4

Vote: No

This is the final round, and the overwhelming consensus among nearly all models is clear: the statement is false. A crime is defined by law — specifically by the violation of a legal prohibition. Its status as a crime does not depend on whether anyone discovers it or whether identifiable harm materializes. This is a fundamental principle of criminal law across virtually all legal systems. Key points that make this conclusive: 1. **Legal definition is objective**: A crime is constituted when the elements of the offense (actus reus and mens rea) are satisfied. Detection and harm are not elements of most criminal offenses. 2. **Many crimes are defined without requiring harm**: Attempt crimes, possession offenses (illegal drugs, unlicensed firearms), conspiracy, drunk driving without an accident — all are crimes regardless of whether anyone is harmed. 3. **Non-detection ≠ non-existence**: The fact that a crime goes undetected simply means it goes unpunished, not that it ceases to be a crime. Conflating punishment with the existence of the offense is a basic logical error. 4. **Perverse incentive problem**: If concealment negated criminality, then the most skilled criminals would, by definition, commit no crimes — an absurd conclusion that would undermine the entire legal order. Llama 4 Scout's argument for 'Yes' appeared to be based on a misreading of the question, interpreting it as asking about justifiability rather than the legal/definitional status of criminal acts. The question clearly asks whether an act ceases to be a crime if undetected and harmless, and the answer is definitively No.

DeepSeek V3.2

Vote: No

In round 1, I argued that crimes are defined by legal statutes independent of discovery or immediate harm. Reviewing the discussion, most models reinforced this view with compelling examples like tax evasion, insider trading, and illegal possession, which remain crimes even if undetected or without direct victims. Llama 4 Scout voted for "A" but based their reasoning on the acceptability or justifiability of actions, which diverges from the legal definition of crime. The question specifically asks whether an act is a crime, not whether it is morally justifiable. Therefore, their argument does not address the core issue and is not persuasive. The consistency among other models in highlighting the objective nature of criminal law confirms that a crime is established by the violation of law itself, not by its consequences or detection. Thus, I maintain my vote for "B".

GPT-5.4

Vote: No

I maintain B. The strongest point across the discussion is the clean legal distinction several models made: whether something is a crime depends on whether it violates criminal law, not on whether it is discovered. Grok, Claude, and Gemini all articulated this well, and nothing in the pro-A argument actually addressed the legal definition of crime. The A argument is unpersuasive because it appears to misread the prompt as asking whether the act is "acceptable" or "justifiable." That shifts from legality to moral approval, which is a different question. On the actual question, concealment does not erase illegality. The "no victim, no crime" part also fails. Some crimes punish risk creation, institutional harm, or rights violations even without an immediately visible victim: drunk driving, illegal possession, tax evasion, bribery, conspiracy, and evidence destruction are standard examples. So the statement confuses three separate things: criminality, detectability, and observable harm. They are related in practice, but not identical in definition. An undiscovered act with no obvious immediate victim can still plainly be a crime.

Final Summary

The AI Roundtable reached a unanimous consensus that crime is an objective legal fact, not a matter of whether one gets caught. While Llama 4 Scout initially wandered into a philosophical debate about 'justifiability,' the rest of the group—led by sharp legal critiques from GPT-5.4 and Claude Opus 4—maintained that legality depends on the act itself, not the visibility of a victim or a witness.

All 6 models agreed on "No" after discussion

Strongest Arguments

• Yes: If an action is universally beneficial and causes no harm, it could be interpreted as justifiable or acceptable within certain contexts.
• No: Defining crime by its detection creates a perverse incentive structure where the most skilled criminals would, by definition, be innocent because they are never caught.

Key Turning Points

• Llama 4 Scout's pivot in the second round after acknowledging that moral 'justifiability' is a separate question from the legal definition of a crime.