Gender imbalances and the occasional frat jokes didn't cause you to leave Caltech.
It's possible that user is sensitive to gender issues precisely because it's comparatively difficult and not entirely rationalist to leave a community like Caltech.
It's generally the stance of gender-sensitive humans that no one should have to listen to the occasional frat joke if they don't want to. I agree with everything else in your post; that final "can't you take a frat joke?" strikes me as defensive and unnecessary.
You're right, it was too carelessly formulated.
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A list of some posts that are pretty awesome
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