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1/5 I've been on Opus 5 for a week and noticed the code comments stopped using em-dashes. It's all double hypens (--) now. Decided to do some analysis to confirm I wasn't fooling myself...

2/5 My methodology: agentsview indexes all my conversations into an SQLite database so I can just run some queries to count comment lines with -- vs em-dashes.

3/5 What makes me so sure it's the model? I have a specific session where I *switched* from Fable to Opus 5 *mid conversation*. When Fable was running, 11-emdashes in comments. With Opus 5, 36 double hypens. I didn't touch anything else...