Casual conversation amongst friends in permissable, provided your friends are sitting 4 rows (and a good 20 feet) away. Despite the deprived image you have in your head, people actually do work here.

The same goes for class-oriented discussions. 4 different classes use the lab, and at any given time people from more than one of them are in there. If you need to hold a 10 minute discussion with somebody about why their data is valid, stand your lazy carcass up and walk over to them, don't subject the rest of us to your ineptitude.

Basically I'm just saying; don't raise your voice...ever...if there's no fire, I don't care.

All that being stated, don't this the wrong way when I say:

"Dammit Bradley! Shut the hell up right now or I will sing you a lullaby with a splitered two by four! You got it, you overbearing spoiled bastard child of a Quaker and a drunken Scottish soccer hooligan?"