Why this obsession with downer news? Well, for one thing, dire warnings are more useful than polyanna-pangloss-happy ravings! If I must choose - zero-sum - between extremes, then please do have the cynics come sit next to me!
But zero-sum is deeply stupid and self-defeating. As is stylish cynicism, over the long run. Diagnosing a disease is most effective when it is accompanied by a confident determination to take action. And that, in turn, requires some sense of the body's strengths, as well as its weaknesses....http://davidbrin.blogspot.com/2015/04/violence-war-and-improving-world-part-i.html