My cursive “x” looks quite similar to my cursive “n”. In my Real and Abstract Analysis exam, IIRC, I remember writing a limit expression, as n goes to infinity,

My cursive “x” looks quite similar to my cursive “n”. In my Real and Abstract Analysis exam, IIRC, I remember writing a limit expression, as n goes to infinity, that involved no “x” variable. The professor read it as an “x”, despite the context, and promptly marked it incorrect. It taught me to make my handwriting unambiguous, but I’m still bitter about this, some 15+ years later :P