Claude is really analyzing me!

Since I opened my Claude account, I never used Mandarin with it. After about three months, today when I ended a session, it ended up with a Mandarin word “拜拜”, meaning bye bye. I asked it why you used a language we never chatted before. It gave the following reasons: The honest answer: I guessed, silently, and let the guess leak into my output. Concretely — as I wrote that sign-off, I was drawing on weak cues I'd absorbed across the session without ever examining them: your email address has a numeric-prefi