Introduction
For more than two years, in my lectures, I have repeated a phrase that, to 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: they measured, with EEG, the brain activity of people who used generative AI (like ChatGPT) to write texts. The results are as revealing as they are worrying.
Brains that used exclusively AI showed lower neural activity, less connected cognitive networks, and reduced memory and retention capacity for the content produced. Furthermore, participants could not even quote parts of the texts they had just generated. Simply... they didn't rememberThe 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, alone, doesn't solve anythingIt 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: enhance the human brain and business processesIt should be used to expand your 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: “David, where is the ROI of AI?”, my answer is clear: it's about integrating AI into critical business processes, orchestrating data, eliminating inefficiencies, and transforming the organization's collective brain. Anyone who seeks AI solely to automate the trivial or outsource thinking is investing incorrectly—and worse, is regressing.
This study isn't just a warning. It's scientific validation of everything I've been advocating: 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 that remains is: Are you using AI to strengthen your brain… or to atrophy it?
