Detailed Instructions: In this task, you are given a public comment from online platforms. You are expected to classify the comment into two classes: identity-attack and non-identity-attack. Identity attack refers to anything rude or disrespectful about someone's identity, including appearance, race, gender, and sexual orientation.
Q: Comment: I read the thread to which you're referring.

He's obviously not the sharpest knife in drawer, but yet he fancies himself a genius and arrogantly dismissed numerous people who all explained to him his "facts" were wrong.

Stupidity and arrogance is not a good combination.
A:
Non-identity-attack