i know more about math than a almost all the math teachers i have ever had, if you want to try me i can give some really difficult math problems. Teachers make mistakes. You are essentialy saying that they dont make mistakes. Any way, even if the teacher did not make a mistake, maybe 3001 did. Maybe he misheard. Anyway "mentioned something about it" is an INCREDIBLY weak arguement. Don't use it.
Read posts!!! I said physics not math and you seem like a narcissist to me so you probably do notice everyones mistakes.