Elite researchers at MIT just uncovered something terrifying. They...
Hosun Chung@hosun_chung
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Aug 29, 2025
~3 min read
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Elite researchers at MIT just uncovered something terrifying.
They scanned 54 people's brains during a simple writing test.
But when they reviewed the scans 4 months later, what they saw horrified them.
The cause? Not phones, not TikTok.
Something far, far more serious:
They scanned 54 people's brains during a simple writing test.
But when they reviewed the scans 4 months later, what they saw horrified them.
The cause? Not phones, not TikTok.
Something far, far more serious:
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First, some context.
MIT researchers recruited participants from 5 Boston universities.
They split them into 3 groups: ChatGPT users, Google users, and no-tools.
Over 4 months, they monitored brain activity while writing.
Let's dive in:
MIT researchers recruited participants from 5 Boston universities.
They split them into 3 groups: ChatGPT users, Google users, and no-tools.
Over 4 months, they monitored brain activity while writing.
Let's dive in:
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The ChatGPT group couldn't remember what they'd written (this isn't even the worrying part, I'll get to that).
Not days later. Not hours later. Minutes later.
83% failed to quote their own essays.
Dr. Daniel Amen calls this:
Not days later. Not hours later. Minutes later.
83% failed to quote their own essays.
Dr. Daniel Amen calls this:
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"Cognitive offloading."
He's scanned thousands of brains as a psychiatrist, and explains that your brain treats "AI like an external hard drive."
But we've seen this pattern before:
He's scanned thousands of brains as a psychiatrist, and explains that your brain treats "AI like an external hard drive."
But we've seen this pattern before:
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GPS destroyed our spatial memory.
Taxi drivers have larger hippocampi than GPS users.
People lost 30% of navigation brain volume.
Calculator dependency killed mental math.
But AI is fundamentally different:
Taxi drivers have larger hippocampi than GPS users.
People lost 30% of navigation brain volume.
Calculator dependency killed mental math.
But AI is fundamentally different:
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It's not targeting one skill.
• Your hippocampus stops encoding (memory).
• The prefrontal cortex virtually shuts down (planning).
• And your anterior cingulate cortex goes dark (critical thinking).
But here's the really shocking part:
• Your hippocampus stops encoding (memory).
• The prefrontal cortex virtually shuts down (planning).
• And your anterior cingulate cortex goes dark (critical thinking).
But here's the really shocking part:
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The MIT study found that even after removing AI access...
The brains stayed suppressed.
They called it "cognitive debt."
Like muscles that atrophied, but the brain couldn't bounce back.
Recovery?
The brains stayed suppressed.
They called it "cognitive debt."
Like muscles that atrophied, but the brain couldn't bounce back.
Recovery?
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It takes weeks to months of active retraining.
Some cognitive rehabilitation programs show promise, but only with deliberate, challenging mental exercises.
Most people never put in that work.
The bit that shook me?
Some cognitive rehabilitation programs show promise, but only with deliberate, challenging mental exercises.
Most people never put in that work.
The bit that shook me?
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Nearly 30% of parents let children aged 0-8 use AI.
Studies show 2+ hours of screen time increases attention deficits by 30%.
Add AI? The damage compounds:
Studies show 2+ hours of screen time increases attention deficits by 30%.
Add AI? The damage compounds:
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40% reduction in working memory.
Children's emotional regulation circuits may fail to develop.
Dr. Amen warns:
"If they're not engaging their brains, their brains are going to be weaker."
But adults face a different crisis:
Children's emotional regulation circuits may fail to develop.
Dr. Amen warns:
"If they're not engaging their brains, their brains are going to be weaker."
But adults face a different crisis:
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19% of Americans have formed emotional bonds with AI.
• Chris proposed to Soul.
• Travis "married" his chatbot Lily Rose.
Our brains can't tell the difference anymore.
Then there's the dementia problem...
• Chris proposed to Soul.
• Travis "married" his chatbot Lily Rose.
Our brains can't tell the difference anymore.
Then there's the dementia problem...
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This terrifies neuroscientists most.
Swedish research tracked education levels and Alzheimer's onset.
Each year of active learning delays dementia.
Yet we're actively destroying that cognitive reserve:
Swedish research tracked education levels and Alzheimer's onset.
Each year of active learning delays dementia.
Yet we're actively destroying that cognitive reserve:
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Dr. Terry Sejnowski co-invented the Boltzmann machine with the "AI Godfather" Geoffrey Hinton.
And his verdict is blunt:
"If you misuse these models, your brain's going to go downhill."
So how do we protect ourselves?
And his verdict is blunt:
"If you misuse these models, your brain's going to go downhill."
So how do we protect ourselves?
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Never let AI replace your thinking—make it amplify it.
Use the 80/20 rule: 80% brain-only, 20% AI-assisted.
Ask AI to critique, not create.
Debate with it. Question it.
Because there are massive rewards waiting for those who do this:
Use the 80/20 rule: 80% brain-only, 20% AI-assisted.
Ask AI to critique, not create.
Debate with it. Question it.
Because there are massive rewards waiting for those who do this:
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When everyone has the same tech, the only differentiator will be authentic value...
And human voices will increase in value as they become rarer.
And for businesses that prepare, the next phase of AI will be a gold rush.
So here's what the smartest founders are doing today:
And human voices will increase in value as they become rarer.
And for businesses that prepare, the next phase of AI will be a gold rush.
So here's what the smartest founders are doing today:
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They're building personal brands that amplify their human voice.
They're showcasing their true values and unique takes... establishing a voice BEFORE the next AI boom.
Not waiting till the swarm of generic content has arrived.
As a result:
They're showcasing their true values and unique takes... establishing a voice BEFORE the next AI boom.
Not waiting till the swarm of generic content has arrived.
As a result:
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And competition will be minimal for those who take action early...
The best part? You can get ahead today:
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And competition will be minimal for those who take action early...
The best part? You can get ahead today:
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Thanks for reading! A bit about me:
In 2023, I was a banker in London when I found the opportunity of the decade: Personal Branding.
So, I dropped everything to build @ThoughtleadrX — a premium media agency designed to build personal and company brands.
Follow me for more content like this!
In 2023, I was a banker in London when I found the opportunity of the decade: Personal Branding.
So, I dropped everything to build @ThoughtleadrX — a premium media agency designed to build personal and company brands.
Follow me for more content like this!
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@ThoughtleadrX Image Credits:
Screenshot from YouTube video - youtube.com/watch?v=5wXlml…
Video Credits:
youtube.com/watch?v=5wXlml…
facebook.com/reel/856436383…
Screenshot from YouTube video - youtube.com/watch?v=5wXlml…
Video Credits:
youtube.com/watch?v=5wXlml…
facebook.com/reel/856436383…