For one, I have no idea why you're getting upset. I'm guessing that you're a stubborn spoiled kid of some sort.
I dont have selective hearing, neither does the other 10 people that watched the game with me. Grappolo only covered his ears a handful of times. I seen games where the offense was so rattled in the dome that they made mistakes or had to use time outs. That dome was no where near as loud as it should have been. The crowd had no impact on the 49ers and maybe, just maybe genius, that if those 30k plus 49ers were replaced with saints fans it could have been. Its not rocket science.. now go back to school.