Why Sticks and Stones Will Beat Our Drones

Foreign Policy:  "I know not with what weapons World War III will be fought," Albert Einstein warned President Truman, "but World War IV will be fought with sticks and stones."

It doesn't do to quarrel with Einstein, and he's no doubt right about World War IV. But implied in Einstein's famous adage is an assumption that right up until the moment we knock ourselves back into the Stone Age, the technologies of warfare will evolve in one direction only: They will become ever more advanced, complex, sophisticated, and lethal.

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