Em dashes are now considered the enemy of performance

DanielLockyer · x · 2026-10-07

A discussion notes that beyond humans disliking em dashes — long seen as a telltale marker of AI-generated text — they're apparently bad for model performance too. Daniel Lockyer quips that the punctuation is now "considered the enemy of performance," capping off one of AI culture's favorite running jokes.

Related event: AI's Em Dash Habit: Hated by Humans and Bad for Models(2 posts)→

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