If it can be weighed or measured its probably for trade or sale, using this analogy in risk or good 2 bad ratio, is similar to debt to income or is the juice worth he squeeze (moral compensation) through quantifying this as a predictable figure. I.E. does the good outweigh the bad. in conflict or war there is always going to be collateral damage. Is the risk of worth the fight? Unfortunately for is US CITIZENS we are viewed as expendable every day through war, pollution, spin control. Knowledge is power! As the tail wags the dog!
It means to balance the good of something against the bad and make a decision ba<x>sed on the result.
Pretty self-explanatory , I would have thought.