Reddit theory: AI's signature 'it's not X, it's Y' tic may come from Chinese

justsayinbye · reddit · 2026-10-21

A Reddit user proposes that the hallmark LLM writing tic "It's not X, it's Y" likely originates from the Chinese construction 不是……而是……, which is ubiquitous in Chinese writing and taught in primary school. Key observations:

Native English speakers rarely write this way, and the AI-produced pairs are usually tautologies rather than true antitheses — e.g. "it's not a discovery, it's a journey of exploration" reads as redundant in English.
Translated into Chinese (不是一次发现，而是一段探索之旅), the same sentence reads like perfectly natural marketing copy, because the Chinese pair is used for nuance and elaboration, not strict opposites.
The author adds a circumstantial timeline link: the tic surfaced around when reports noted Western models trained partly on Chinese data believed they were Chinese.

It's speculation, but a genuinely thought-provoking linguistic observation about where LLM style quirks come from.

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Reddit theory: AI's signature 'it's not X, it's Y' tic may come from Chinese

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