Many people have the experience of visiting a content website for a specific purpose—say, for example, going to a newspaper site to check the weather forecast—and then find themselves thirty minutes later still mindlessly following trails of links, skipping from one headline to another. This behavior can also be sparked by unpredictable feedback: most articles end up duds, but occasionally you’ll land on one that creates a strong emotion, be it righteous anger or laughter. Every appealing headline clicked or intriguing link tabbed is another metaphorical pull of the slot machine handle.
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