First of all - I wasn't making a value judgement. Personally, I agree with you - it is reprehensible and disgusting. That is part of the reason I don't work at Goldman's anymore. I always found it a bit embarrassing to be associated with them. By "good" bankers - I ment the one's making all the money. Not those who are morally good.

Second - it is how things work. Not just in commodities, but in everything Goldman's does. There is always an angle which greatly reduces risk. That angle might be insider trading, advanced statistics, or just a rigged market. Goldman's is doing nothing illegal that I am aware of or anyone can prove. ...it is just how things work.