Factories, distribution centers, and grocery stores are still largely staffed by humans, but that could change if Google and Amazon have their way. On “60 Minutes,” Jeff Bezos, the chief executive of Amazon, unveiled his company’s plan to offer 30-minute delivery using an army of GPS-guided drones. With characteristic optimism, he said he expected to secure government approval within five years. At the same time, Google is putting its resources behind the development of a new generation of robots.
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