Introduction
For more than two years, in my lectures, I have repeated a phrase that, for some, seemed provocative: “AI is not magic, nor a substitute for thinking. It is a brain amplifier—not a crutch for those who don't want to think.”
Now, science confirms it.
A recent MIT study ( Your Brain on ChatGPT ) did something unprecedented: it measured, using EEG, the brain activity of people who used generative AI (such as ChatGPT) to write texts. The results are as revealing as they are worrying.
Brains that exclusively used AI showed less neural activity , less connected cognitive networks, and reduced memory and retention capacity for the content they had produced. Moreover, participants couldn't even cite parts of the texts they had just generated. They simply… didn't remember . The explanation is clear: they delegated the cognitive process to AI.
This is called cognitive debt.
The study goes further. Participants who first wrote without AI and then switched to AI performed well. On the other hand, those who did the opposite—first using AI and then trying to write on their own—suffered a cognitive decline. Their structured reasoning, memory, and elaboration skills declined dramatically.
This is exactly what I've been talking about for years in my lectures, workshops, and mentoring sessions. AI, on its own, solves nothing . It doesn't create value when used as a mental shortcut. On the contrary: it impoverishes you intellectually if you use it as a crutch.
The true potential of AI lies in another direction: enhancing the human brain and business processes . It should be used to expand analytical capabilities, accelerate operational tasks, generate insights, and transform data into intelligent decisions. Never as a replacement for your cognition—but as an extension of it.
When companies ask me, "Deivid, where is the ROI of AI?" , my answer is clear: it's in integrating AI into critical business processes, orchestrating data, eliminating inefficiencies, and transforming the organization's collective brain. Those who seek AI only to automate trivial tasks or outsource thinking are investing incorrectly—and worse, they are going backward.
This study is not just a warning. It's a scientific validation of everything I've been arguing: AI is not for those who don't want to think—it's for those who want to think more, better, and faster.
The question remains: are you using AI to strengthen your brain... or to atrophy it?
