Trade Makes Us Less Likely to Kill

Michael Shermer writes in the Huffington Post:

"Trade makes us less likely to kill our potential trading partners. As Jared Diamond once told me about his research on Papua New Guinea hunter-gatherers: "Should you happen to meet an unfamiliar person in the forest, of course you try to kill him or else to run away. Our modern custom of just saying hello and starting a friendly chat would be suicidal." And yet something happened in the 1960s to bring about more peaceful interactions. Initially, peace was imposed upon the native New Guineans by fiat from the Western colonial government that ruled over the territory, but officials then insured continued peace by providing goods that the people needed, as well as the technologies to enable them to continue producing more resources on their own. In less than one generation, New Guinean hunter-gatherers who were fighting each other with stone tools were suddenly New Guinean consumer-traders operating computers, flying planes, and running their own small businesses. Where goods crossed New Guinea frontiers, New Guinea armies did not.

This is an example from my book of what I call Bastiat's Principle, from an observation by the 19th-century French economist Frédéric Bastiat: "Where goods do not cross frontiers, armies will." Although trade is not a sure-fire prophylactic against between-group conflict (there are exceptions to Thomas Friedman's observation that two countries with MacDonalds don't fight, but as a first order approximation it is accurate), it is an integral component to establishing trust between strangers that lessens the potential volatility that naturally exists whenever groups come into contact with one another, especially over the allocation of scare resources that have alternative uses, the very definition of economics.

And that brings us back full circle to trade, markets, and morality."