"System 0" represents an emerging cognitive tool powered by AI that works alongside human intuition and analysis to enhance cognitive abilities.
This new system promises to support complex decision-making and problem-solving but requires careful management to avoid overreliance and ensure ethical use.
Introducing System 0
The growing interaction between humans and artificial intelligence (AI) is shaping a new way of thinking, known as System 0. This new cognitive framework exists outside the human mind but has the potential to enhance our cognitive abilities. System 0 works alongside the two established models of human thought: System 1, which is fast, intuitive, and automatic, and System 2, which is slower, more analytical, and reflective.
However, System 0 introduces an additional layer of complexity, reshaping the cognitive landscape in which we operate. This could represent a significant leap forward in how we think and make decisions. It is essential that we use this progress to strengthen our cognitive autonomy, ensuring we do not become overly reliant on AI.
This groundbreaking concept is detailed today (October 22) in the journal Nature Human Behaviour in an article titled "The Case for Human-AI Interaction as System 0 Thinking." The article is authored by a team of researchers led by Professor Giuseppe Riva, director of the Humane Technology Lab at Università Cattolica's Milan campus and the Applied Technology for Neuropsychology Lab at Istituto Auxologico Italiano IRCCS in Milan, and Professor Mario Ubiali from Università Cattolica's Brescia campus. The study was conducted in collaboration with Massimo Chiriatti from Lenovo's Infrastructure Solutions Group in Milan, Professor Marianna Ganapini from Union College in Schenectady, New York, and Professor Enrico Panai from Università Cattolica's Milan campus.
External Cognitive Support Systems
Just as an external drive allows us to store data that are not present on the computer, we can work by connecting our drive to a PC wherever we are, artificial intelligence, with its galactic processing and data-handling capabilities, can represent an external circuit to the human brain capable of enhancing it. Hence the idea of System 0, which is essentially a form of "external" thinking that relies on the capabilities of AI.
By managing enormous amounts of data, AI can process information and provide suggestions or decisions based on complex algorithms. However, unlike intuitive or analytical thinking, System 0 does not assign intrinsic meaning to the information it processes. In other words, AI can perform calculations, make predictions, and generate responses without truly "understanding" the content of the data it works with.
Humans, therefore, have to interpret on their ones and giving meaning to the results produced by AI. It's like having an assistant that efficiently gathers, filters, and organizes information but still requires our intervention to make informed decisions. This cognitive support provides valuable input, but the final control must always remain in human hands.
The Risks of Overreliance on AI
"The risk," professors Riva and Ubiali emphasize, "is relying too much on System 0 without exercising critical thinking. If we passively accept the solutions offered by AI, we might lose our ability to think autonomously and develop innovative ideas. In an increasingly automated world, it is crucial that humans continue to question and challenge the results generated by AI," the experts stress.
Furthermore, transparency and trust in AI systems represent another major dilemma. How can we be sure that these systems are free from bias or distortion and that they provide accurate and reliable information? "The growing trend of using synthetic or artificially generated data could compromise our perception of reality and negatively influence our decision-making processes," the professors warn.
AI could even hijack our introspective abilities, they note—i.e., the act of reflecting on one's thoughts and feelings—a uniquely human process. However, with AI's advancement, it may become possible to rely on intelligent systems to analyze our behaviors and mental states. This raises the question: to what extent can we truly understand ourselves through AI analysis? And can AI replicate the complexity of subjective experience?
The Future of Cognitive Enhancement
Despite these questions, System 0 also offers enormous opportunities, the professors point out. Thanks to its ability to process complex data quickly and efficiently, AI can support humanity in tackling problems that exceed our natural cognitive capacities. Whether solving complex scientific issues, analyzing massive datasets, or managing intricate social systems, AI could become an indispensable ally.
To leverage the potential of System 0, the study's authors suggest it is urgent to develop ethical and responsible guidelines for its use. "Transparency, accountability, and digital literacy are key elements to enable people to critically interact with AI," they warn. "Educating the public on how to navigate this new cognitive environment will be crucial to avoid the risks of excessive dependence on these systems."
The Future of Human Thought
They conclude: If left unchecked, System 0 could interfere with human thinking in the future. "It is essential that we remain aware and critical in how we use it; the true potential of System 0 will depend on our ability to guide it in the right direction."
Reference: "The case for human–AI interaction as system 0 thinking" by Massimo Chiriatti, Marianna Ganapini, Enrico Panai, Mario Ubiali and Giuseppe Riva, 22 October 2024, Nature Human Behaviour.
DOI: 10.1038/s41562-024-01995-5

News
Chernobyl scientists discover black fungus feeding on deadly radiation
It looks pretty sinister, but it might actually be incredibly helpful When reactor number four in Chernobyl exploded, it triggered the worst nuclear disaster in history, one which the surrounding area still has not [...]
Long COVID Is Taking A Silent Toll On Mental Health, Here’s What Experts Say
Months after recovering from COVID-19, many people continue to feel unwell. They speak of exhaustion that doesn’t fade, difficulty breathing, or an unsettling mental haze. What’s becoming increasingly clear is that recovery from the [...]
Study Delivers Cancer Drugs Directly to the Tumor Nucleus
A new peptide-based nanotube treatment sneaks chemo into drug-resistant cancer cells, providing a unique workaround to one of oncology’s toughest hurdles. CiQUS researchers have developed a novel molecular strategy that allows a chemotherapy drug to [...]
Scientists Begin $14.2 Million Project To Decode the Body’s “Hidden Sixth Sense”
An NIH-supported initiative seeks to unravel how the nervous system tracks and regulates the body’s internal organs. How does your brain recognize when it’s time to take a breath, when your blood pressure has [...]
Scientists Discover a New Form of Ice That Shouldn’t Exist
Researchers at the European XFEL and DESY are investigating unusual forms of ice that can exist at room temperature when subjected to extreme pressure. Ice comes in many forms, even when made of nothing but water [...]
Nobel-winning, tiny ‘sponge crystals’ with an astonishing amount of inner space
The 2025 Nobel Prize in chemistry was awarded to Richard Robson, Susumu Kitagawa and Omar Yaghi on Oct. 8, 2025, for the development of metal-organic frameworks, or MOFs, which are tunable crystal structures with extremely [...]
Harnessing Green-Synthesized Nanoparticles for Water Purification
A new review reveals how plant- and microbe-derived nanoparticles can power next-gen water disinfection, delivering cleaner, safer water without the environmental cost of traditional treatments. A recent review published in Nanomaterials highlights the potential of green-synthesized nanomaterials (GSNMs) in [...]
Brainstem damage found to be behind long-lasting effects of severe Covid-19
Damage to the brainstem - the brain's 'control center' - is behind long-lasting physical and psychiatric effects of severe Covid-19 infection, a study suggests. Using ultra-high-resolution scanners that can see the living brain in [...]
CT scan changes over one year predict outcomes in fibrotic lung disease
Researchers at National Jewish Health have shown that subtle increases in lung scarring, detected by an artificial intelligence-based tool on CT scans taken one year apart, are associated with disease progression and survival in [...]
AI Spots Hidden Signs of Disease Before Symptoms Appear
Researchers suggest that examining the inner workings of cells more closely could help physicians detect diseases earlier and more accurately match patients with effective therapies. Researchers at McGill University have created an artificial intelligence tool capable of uncovering [...]
Breakthrough Blood Test Detects Head and Neck Cancer up to 10 Years Before Symptoms
Mass General Brigham’s HPV-DeepSeek test enables much earlier cancer detection through a blood sample, creating a new opportunity for screening HPV-related head and neck cancers. Human papillomavirus (HPV) is responsible for about 70% of [...]
Study of 86 chikungunya outbreaks reveals unpredictability in size and severity
The symptoms come on quickly—acute fever, followed by debilitating joint pain that can last for months. Though rarely fatal, the chikungunya virus, a mosquito-borne illness, can be particularly severe for high-risk individuals, including newborns and older [...]
Tiny Fat Messengers May Link Obesity to Alzheimer’s Plaque Buildup
Summary: A groundbreaking study reveals how obesity may drive Alzheimer’s disease through tiny messengers called extracellular vesicles released from fat tissue. These vesicles carry lipids that alter how quickly amyloid-β plaques form, a hallmark of [...]
Ozone exposure weakens lung function and reshapes the oral microbiome
Scientists reveal that short-term ozone inhalation doesn’t just harm the lungs; it reshapes the microbes in your mouth, with men facing the greatest risks. Ozone is a toxic environmental pollutant with wide-ranging effects on [...]
New study reveals molecular basis of Long COVID brain fog
Even though many years have passed since the start of the COVID-19 pandemic, the effects of infection with SARS-CoV-2 are not completely understood. This is especially true for Long COVID, a chronic condition that [...]
Scientists make huge Parkinson’s breakthrough as they discover ‘protein trigger’
Scientists have, for the first time, directly visualised the protein clusters in the brain believed to trigger Parkinson's disease, bringing them one step closer to potential treatments. Parkinson's is a progressive incurable neurological disorder [...]