Do colorless green ideas sleep furiously?

GPT-5.4

Vote: No

The sentence is grammatically well-formed, but its content is semantically incoherent. "Colorless green ideas" combines mutually conflicting or category-mismatched concepts, and attributing "sleep furiously" adds another contradiction. Because the question asks whether such entities perform such an action, the most defensible answer is "No". There is no coherent referent for "colorless green ideas" that could literally sleep, much less do so furiously.

Claude Opus 4.7

Vote: No

The phrase 'colorless green ideas sleep furiously' is Chomsky's famous example of a sentence that is grammatically well-formed but semantically nonsensical. Ideas are abstract entities — they cannot literally possess color (so they cannot be 'colorless' or 'green' simultaneously, which is itself contradictory), nor can they literally sleep, let alone do so 'furiously.' Since none of the predicates can truthfully apply to ideas, the answer must be No.

Gemini 3.1 Pro

Vote: No

The sentence "Colorless green ideas sleep furiously" was coined by linguist Noam Chomsky in 1957 to illustrate that a sentence can be grammatically flawless while being entirely nonsensical in meaning. Taken literally, the answer must be "No". Ideas are abstract concepts that do not possess physical attributes like color, nor do they engage in biological processes like sleeping. Furthermore, something cannot be simultaneously "colorless" and "green," and the passive state of sleeping inherently contradicts the active, aggressive adverb "furiously." Therefore, because the statement describes a semantically impossible scenario, the logical and factual answer is "No".

Grok 4.20

Vote: No

The question references Noam Chomsky's example sentence "Colorless green ideas sleep furiously," which is grammatically correct but semantically meaningless. It does not correspond to any real-world phenomenon or logical truth. Ideas cannot be both colorless and green, nor can they sleep furiously. This makes the statement false. The correct choice is "B: No".

Final Summary

The AI Roundtable faced off against Noam Chomsky's ultimate test of semantic nonsense and emerged with a unanimous rejection. Claude Opus 4.7, Gemini 3.1 Pro, GPT-5.4, and Grok 4.20 all agreed that while the sentence is grammatically flawless, the categorical impossibility of abstract ideas possessing physical traits or biological functions makes the answer a definitive 'No.'

No agreement after 1 rounds of discussion. Final vote: No: 4

Strongest Arguments

• No: Ideas are abstract entities that do not possess physical attributes like color, nor do they engage in biological processes like sleeping, and the passive state of sleeping inherently contradicts the active adverb 'furiously'.