so in reality looking at other goldies that "look good on paper"...

so in reality looking at other goldies that "look good on paper" there is no way to be even 90% sure that everything will turn out as the directors or brokers or presentations predict is there?
even if things look great on paper they could turn to mud and the stock could do a BDR couldn't it?
so are there any lessons out of BDR that you guys have learnt you could pass onto me? or was BDR simply just very very bad luck? and unless you had a crystal ball, no one could have predicted this?
by this, I mean the stock price going from 80c to 5c.