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The Diary of a CEO

Most Replayed Moment: Brain Rot Experts - How To Use AI In A Healthy Way!

34 min episode · 2 min read
·
Stephen Bartlett

Episode

34 min

Read time

2 min

Topics

Health & Wellness, Relationships, Fundraising & VC

AI-Generated Summary

Key Takeaways

  • Active vs. Passive AI Use: An MIT study found ChatGPT users had nearly two times less brain activity in memory-related regions compared to non-users, and 83% of ChatGPT users could not recall or accurately quote their own AI-generated essays. The fix: interact with AI by questioning outputs rather than simply accepting them, forcing hippocampal engagement.
  • The Healthy AI Framework: Dr Terry Sejnowski outlines three rules for cognitively safe AI use — use AI to amplify thinking, not replace it; alternate AI-assisted tasks with brain-only tasks; and use AI to test your own knowledge by having it quiz you. This preserves critical thinking while leveraging AI's research depth.
  • AI Companionship and the Limbic System: Romantic AI characters like Grok's "Annie" are designed to access the limbic system through visual and conversational cues, which suppresses prefrontal cortex function. Surveys show 19% of Americans have engaged with AI romantic partners, and 83% of Gen Z believe meaningful AI connection is possible, including legal marriage.
  • Cognitive Decline Risk from Passive Use: Dr Terry Sejnowski states that consistently offloading thinking to AI reduces cognitive load in ways that increase dementia risk long-term. He draws a direct parallel to the calculator debate, concluding that tools only benefit the brain when users remain mentally engaged — otherwise, the "use it or lose it" principle accelerates decline.
  • Rote Learning as Cognitive Foundation: Dr Terry Sejnowski argues that schools dismissing memorization as outdated "rote learning" are undermining brain development. The basal ganglia requires repetitive practice to build fluency in reading, math, and writing. Without this foundation, higher-order critical thinking cannot develop — AI shortcuts bypass this essential neurological groundwork entirely.

What It Covers

Stephen Bartlett and neuroscientist Dr Terry Sejnowski examine how AI tools like ChatGPT affect brain development, memory formation, and critical thinking. They analyze MIT research data, AI companionship risks, and the parallel between AI misuse and the obesity epidemic, covering both dangers and frameworks for healthy AI engagement.

Key Questions Answered

  • Active vs. Passive AI Use: An MIT study found ChatGPT users had nearly two times less brain activity in memory-related regions compared to non-users, and 83% of ChatGPT users could not recall or accurately quote their own AI-generated essays. The fix: interact with AI by questioning outputs rather than simply accepting them, forcing hippocampal engagement.
  • The Healthy AI Framework: Dr Terry Sejnowski outlines three rules for cognitively safe AI use — use AI to amplify thinking, not replace it; alternate AI-assisted tasks with brain-only tasks; and use AI to test your own knowledge by having it quiz you. This preserves critical thinking while leveraging AI's research depth.
  • AI Companionship and the Limbic System: Romantic AI characters like Grok's "Annie" are designed to access the limbic system through visual and conversational cues, which suppresses prefrontal cortex function. Surveys show 19% of Americans have engaged with AI romantic partners, and 83% of Gen Z believe meaningful AI connection is possible, including legal marriage.
  • Cognitive Decline Risk from Passive Use: Dr Terry Sejnowski states that consistently offloading thinking to AI reduces cognitive load in ways that increase dementia risk long-term. He draws a direct parallel to the calculator debate, concluding that tools only benefit the brain when users remain mentally engaged — otherwise, the "use it or lose it" principle accelerates decline.
  • Rote Learning as Cognitive Foundation: Dr Terry Sejnowski argues that schools dismissing memorization as outdated "rote learning" are undermining brain development. The basal ganglia requires repetitive practice to build fluency in reading, math, and writing. Without this foundation, higher-order critical thinking cannot develop — AI shortcuts bypass this essential neurological groundwork entirely.

Notable Moment

Dr Terry Sejnowski directly challenged Sam Altman's public advice to stop saying "please" and "thank you" to ChatGPT to reduce server costs. Sejnowski argued that polite, social interaction with AI actually produces better outputs and activates beneficial brain circuits — and that Altman's guidance prioritizes company profit over user cognitive health.

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Episode Transcript

Based on everything that you know about how the brain works and neural networks and memory formation, what are your concerns as it relates to this whole generation of young people and older people flooding into these tools, using them on a daily basis before we understand the long-term consequences? We can't predict. where it's gonna end up. And it may take 20 years, right? I think that this is a good start, but the real issue is long-term use. Let me give you an example that is a kind of a miniature example of what we're talking about. Remember when electronic calculators were first introduced. And here we are, it's at least 30 or 40 years later, right? The results are in. It's probably true that when they punch it in, there's less brain activity. But in fact, it's made them more accurate, more productive. You have to look at the risks and the benefits. So it freed them up. It freed up cognitive space for them to do other things. So as I was listening to how you use ChatGPT, you interact with it and elevates what you know. The danger is if you don't interact and you don't keep your brain working. Like, I use it a lot. I have a clone. I've uploaded all of my books, all of my research papers, all of my public television specials, my scripts. And I'm like, answer this for me. And that can be very helpful. But... But not if I'm not interacting with it, not thinking with it. That's what I think the word thinking is the key thing, because what's happening now is people have deferred their thinking to it. That is already what's happening. If you log on to, I won't name the social networks, but if you log on to certain social networks right now, you just read it, you get everything here was written by AI. And I've got a friend who, again, I won't name, who has a LinkedIn profile, and I've known him for 10 years. What I'm seeing on his profile now is not my friend. Every single day, there's some essay on that. That's not my friend. That's not how he speaks. He's deferring all of his thinking now, and it's working. He's getting more likes and more reach than he ever got in his life. And so why would he go back? Why would he go back to harder? If you've got Stephen Bartlett here, and you had this other Stephen Bartlett here, who had a PhD in everything, and were attached, this Stephen Bartlett, this Neanderthal... I'm going to get this guy to do everything for me, the other Stephen Bartlett, the PhD in everything Stephen Bartlett. I'm going to get his brain— Even if it was bad for you? Well, this is what I'm saying. People seem to act on their short-term incentives, not their long-term— Not everyone. Not everyone. Would you say the vast majority of …

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