In more and more places, machines are running the world. On stock exchanges, high-speed computers armed with trading algorithms and superior pattern recognition are thrashing human competitors . Airline autopilots have become so reliable that human pilots can check out . In cars, software is beginning to assume responsibility for steering, braking, and parking . Drones are patrolling our borders, catching humans who try to sneak in. Computers are telling child-welfare agencies whether to take kids away from parents . Programs are running "virtual call centers," measuring the output of dispersed salespeople and routing customer phone calls to the best performers . Computers don't just work for us anymore. We work for them.
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