
In "Your Stone Age Brain in the Screen Age," neurologist Richard Cytowic reveals why our prehistoric minds struggle with digital overload. Oliver Sacks praised how Cytowic "changed the way we think of the human brain." Can your ancient neural wiring ever adapt to endless notifications?
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Imagine picking up your phone 40,000 times a year-that's not science fiction, it's your reality. While tech executives strictly limit their own children's screen time, they've engineered products that keep the rest of us perpetually tethered to our devices. This isn't accidental. Our Stone Age brains-exquisitely tuned through 200,000 years of evolution to detect change and respond to rewards-have met their match in modern technology. That rustling bush that might have signaled danger to our ancestors has been replaced by the ping of a notification, triggering the same ancient survival circuits. The mismatch between our evolutionary programming and digital environments creates a perfect storm for attention capture and addiction-what former Google ethicist Tristan Harris calls "a race to the bottom of the brain stem." The brain's reward system didn't evolve for happiness but survival, driving us to constantly seek more through powerful dopamine pathways. While a smaller endorphin system provides brief satisfaction, the wanting never truly ends. This biological reality explains our compulsive phone-checking despite diminishing returns. Each notification triggers the same dopamine response that once rewarded finding food or avoiding danger. Social media platforms particularly exploit this mechanism through variable reward schedules-you never know which scroll will yield the dopamine-triggering "like," just as our ancestors never knew which berry bush would yield fruit.
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