A famous person once said, "If you mumble, you don't deserve to be heard."  Although that's kinda mean, I think it's somewhat true.  I just sat through a 2-hour meeting where a guy in the back of the room kept mumbling stuff in response to what was being presented.  He might've had good things to say.  Maybe people should've listened.  But he didn't even try to be heard, so people kept talking over him.  He wasn't a victim though; it's not like he was a quiet little weak guy (like me) who wasn't sure of himself and so got trampled on by the louder, quicker people.  His mumbling was his downfall.  Somebody would be talking and he would say something along the lines of, "Um, but ... the number ... on the slide ... different ... need to redo ... requirements ... huminah huminah ... shrimp scampi ... weaponized plutonium."  In this case, the rule applied:  He mumbled, so he didn't deserve to be heard.  If he had something important to say, he should've spoken up or gotten one of the loud people to say it for him.