“… Once upon a time, there was a brain measuring 1,500 cubic centimeters. It was slow, expensive, and often tired. But it was also capable of imagining, deciding, designing universes, inventing fascinating tools, and defining prodigious formulas in a rational and poetic way. Today, that brain is smaller. And not just anatomically, but also in terms of habit. We have lightened it, outsourced it, automated it. We have built technology that prevents us from thinking, and perhaps convinces us that thinking is no longer necessary. But in this unwritten pact between comfort and conscience, the greatest risk is not losing neurons: it is losing humanity.”
A majestic and misunderstood organ
The human brain is the most complex object known in the universe. Composed of approximately 86 billion neurons, capable of generating thoughts, emotions, languages, and inventions, it has guided humanity through discoveries, cultures, and revolutions. Yet, in the 21st century, this marvel seems to be the victim of a paradox: the more technology we develop, the less we use our cognitive potential. According to numerous neuroevolutionary studies, the size of the human brain has slightly decreased over the last 10,000 years, and average brain activity appears to be increasingly compressed by repetitive, oversimplified, and decontextualized stimuli.
Stimulation or sedation?
We live in an age of constant stimuli: screens, notifications, algorithms. But the brain does not need just any stimuli to develop; it needs challenges, depth, and meaningful silence. Compulsive consumption of often superficial content leads to perceptual saturation that is more like sedation than stimulation. The risk? Functional atrophy, not visible like muscle atrophy, but just as real: less working memory, less cognitive flexibility, and less critical thinking.
The formula for behavior
If human behavior were a formula, it could be written as follows:
Cu = (E → m) × T
Where:
- E is internal energy (thought, emotion, impulse),
- m is transformed matter (concrete action),
- T is the time in which the transformation takes place.
A “full” behavior is therefore one that transforms internal energy into matter (i.e., into real action) within a significant amount of time. But in a society where energy is dispersed in clicks, scrolls, and images devoid of substance, matter becomes thin, and time is consumed in passive waiting.
The brain adapts… even to the worst
Like all biological structures, the brain also follows the law of adaptation. If it is underused, it optimizes: it eliminates unnecessary connections, shuts down circuits, and reshapes the neural architecture. This mechanism, known as “synaptic pruning,” is useful in the early years of life, but harmful if activated by meaningless environments.
The result? Generations that read little, speak less, and think even less. Not because it’s their fault, but because they’ve never been asked to do so.
Epigenetic effects of stress and boredom
Cognitive underuse, combined with anxiety-inducing overstimulation, can alter gene expression. This is the epigenetic effect of chronic stress: elevated cortisol, systemic inflammation, and altered neurogenesis. Some studies show that mental inactivity and prolonged boredom promote degenerative diseases and depressive syndromes, even in younger generations. (Leonardo Benvenuti: malattie mediali)
When left without a mission, the brain closes in on itself. It does not sleep, but it stops dreaming.
An invitation to rekindle the circuits
There is good news: the brain can wake up. It does not need miracles, but real experiences: deep reading, writing, music, art, dialogue, doubt. It needs empty time, but dense time. It needs effort, but effort that is full of meaning. It needs questions, not just answers. We were not born to delegate our synapses to an artificial neural network.
We were born to transform energy into living matter. We were left with a perfect machine, and we learned to use it as a remote control.
We were given a temple, and we started building parking lots.
Our brain is still there, waiting for us.
