There are testers from larian that do the in-depth testing, like quests or skills specificly. I think the idea is to let a lot of different ppl play with different playstyles to balance the game out a bit. Most bug you'll find will be already reported, but there are always some that are new <img src="/ubbthreads/images/graemlins/winkwink.gif" alt="" /> ... like all enemies running away from you on sight
