Member Rara Avis
Some things can be judged in isolation, Jim, but not many. Most issues, after all, carry both a benefit to someone and a cost to someone else. Looking at one while ignoring the other is often selfish and always unwise. As just one example, while I'm sure no one would ever try to justify war by its positive effects on an economy, it would be dangerous to blindly accept those effects with no regard to cost. The war touches too many threads to be easily ignored.
Even lacking great accuracy, I think we have to do the best we can to discern truth. As with every major choice we make in life, uncertainty can't be an excuse for indecision.