> get more info about the workplace you'll be in.
or about the bullet you just dodged...
if someone connected django with number theory in their head and assumed everyone else can see the connection just as spontaneously, i'd much rather leave than try to handle that arse.
"lol I was told you were the Django expert? According to your resume? Are you not supposed to know that?"
Still it does tell you that you have to work with this massive asshole, so it's a worthwhile approach to get more info about the workplace you'll be in.