Trade or Die...

This seems to be the conclusion from this new book reviewed in the NYT. (H/T Crossingwallstreet). The book's central thesis: "“At some point,” Dr. Ridley writes, “after millions of years of indulging in reciprocal back-scratching of gradually increasing intensity, one species, and one alone, stumbled upon an entirely different trick. Adam gave Oz an object in exchange for a different object.”"
And the author's prediction for the rest of the century: “Prosperity spreads, technology progresses, poverty declines, disease retreats, fecundity falls, happiness increases, violence atrophies, freedom grows, knowledge flourishes, the environment improves and wilderness expands.”