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How do companies, producing little more than bits of code displayed on a screen, seemingly control users’ minds?” Nir Eyal, a prominent Valley product consultant, asked in his 2014 book, Hooked: How to Build Habit-Forming Products. “Our actions have been engineered,” he explained. Services like Twitter and YouTube “habitually alter our everyday behavior, just as their designers intended.” One of Eyal’s favorite models is the slot machine. It is designed to answer your every action with visual, auditory, and tactile feedback. A ping when you insert a coin. A ka-chunk when you pull the lever. A flash of colored light when you release it. This is known as Pavlovian conditioning, named after the Russian physiologist Ivan Pavlov, who rang a bell each time he fed his dog, until, eventually, the bell alone sent his dog’s stomach churning and saliva glands pulsing, as if it could no longer differentiate the chiming of a bell from the physical sensation of eating. Slot machines work the same way, training your mind to conflate the thrill of winning with its mechanical clangs and buzzes. The act of pulling the lever, once meaningless, becomes pleasurable in itself. The reason is a neurological chemical called dopamine, the same one Parker had referenced at the media conference. Your brain releases small amounts of it when you fulfill some basic need, whether biological (hunger, sex) or social (affection, validation). Dopamine creates a positive association with whatever behaviors prompted its release, training you to repeat them. But when that dopamine reward system gets hijacked, it can compel you to repeat self-destructive behaviors. To place one more bet, binge on alcohol—or spend hours on apps even when they make you unhappy. Dopamine is social media’s accomplice inside your brain. It’s why your smartphone looks and feels like a slot machine, pulsing with colorful notification badges, whoosh sounds, and gentle vibrations. Those stimuli are neurologically meaningless on their own. But your phone pairs them with activities, like texting a friend or looking at photos, that are naturally rewarding. Social apps hijack a compulsion—a need to connect—that can be even more powerful than hunger or greed. Eyal describes a hypothetical woman, Barbra, who logs on to Facebook to see a photo uploaded by a family member. As she clicks through more photos or comments in response, her brain conflates feeling connected to people she loves with the bleeps and flashes of Facebook’s interface. “Over time,” Eyal writes, “Barbra begins to associate Facebook with her need for social connection.” She learns to serve that need with a behavior—using Facebook—that in fact will rarely fulfill it.
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Max Fisher (The Chaos Machine: The Inside Story of How Social Media Rewired Our Minds and Our World)