Your Mind Might Be Flatter Than You Think: The Illusion of Mental Depth

Imagine you’re reading a captivating novel. You get to know the characters through their actions, their words, and what the author tells you about them. You might feel like you understand them deeply – their hopes, their fears, their motivations. But here’s a simple truth: these characters don’t have a “hidden truth” or an “inner life” beyond what’s written on the page. There are no secret facts about a fictional character like Harry Potter, for instance, such as whether he was born on a Tuesday or had a subconscious fear of dogs, other than what his author, J.K. Rowling, decided to write.

Now, what if we apply this idea to ourselves and the people around us? What if, just like fictional characters, we don’t have hidden, pre-existing “mental depths” filled with stable beliefs, desires, and motives that are just waiting to be discovered? This is the core idea behind the perspective explored in the book ‘The Mind is Flat: The Illusion of Mental Depth and The Improvised Mind’ by Nick Chater. 

The Illusion of a Hidden Inner World

We tend to have a strong feeling, an intuition, that our minds are like vast oceans or landscapes. We believe that our conscious thoughts – the ones we’re aware of right now – are just tiny ripples on the surface of a deep, complex inner world. This inner world is supposedly full of hidden thoughts, feelings, beliefs, desires, and even unconscious forces that shape who we are. This idea became particularly popular after Sigmund Freud.

But according to the idea that the mind is flat, this sense of mental depth is actually an illusion. There is no pre-existing inner world of thought from which our thoughts and actions magically appear. Instead, our thoughts, emotions, feelings, and even what we perceive of the world, exist purely at the “mental surface”. The surface is all there is.

Introspection is Invention, Not Discovery

If there’s no pre-existing inner world to look into, how do we come up with ideas or explain ourselves? The conventional view is that we use introspection – a kind of “inner observation” – to peer into our minds and see what’s really going on in there.

But the “mind is flat” theory suggests that introspection isn’t like looking into a database or exploring a hidden landscape. Instead, introspection is a process of invention. Our minds are constantly creating interpretations and explanations in real time to make sense of our own words, actions, and the world around us. We invent these interpretations in the flow of experience, just like we interpret fictional characters from the text on a page.

This means that when you ask yourself, “Why did I do that?” or “What do I really believe?”, your mind isn’t retrieving a pre-written answer from a hidden depth. It’s fabricating a justification or an explanation in that very moment. The sheer power of our invention means we can come up with explanations very quickly, making it feel like they were there all along.

The Mind as a Master Improviser

If our minds aren’t drawing from deep, stable reserves, what are they doing? The answer is: they are relentlessly improvising. Just like a jazz musician improvises a melody or an actor improvises a scene, our minds are constantly creating our thoughts, perceptions, feelings, and actions in the moment.

When we have a conversation, for example, the words we use and the ideas we express aren’t read from an inner script. They just burble out, and remarkably, they usually make sense. This is because we are improvising our responses. Similarly, our choices, our emotional responses, and even how we perceive the world are constantly being improvised based on the information available to us in that instant.

According to Chater, this improvisational nature means our thoughts and explanations can be flimsy, fragmented, and even self-contradictory. If you ask someone about an issue on different days or in different ways, you might get different answers. This inconsistency is expected from an improvising mind, but it’s hard to explain if we assume there’s a stable, consistent inner world.

Creating Coherence from Improvisation

You might think that a mind constantly making things up on the spot would be completely chaotic. But paradoxically, the task of our improvising mind is to create order and coherence. Our brains strive to make our thoughts and behaviour as consistent as possible with what we’ve said and done before – to stay “in character”.

How does it do this without a script or a map? It works by creating stories one step at a time, drawing on past improvisations. Each new thought, perception, or action is based on the previous ones. The mind is like a judge deciding a new case by looking at and reinterpreting past cases. It improvises our present actions and thoughts based on the “theme” of our past experiences and thoughts. This gives our actions, words, and life a sense of coherent shape over time. We are, in a sense, characters of our own creation.

This process involves a cycle of thought where the brain focuses on interpreting one piece of information at a time – whether it’s something we see, hear, feel, or a fragment from memory. This narrow focus on one thing at a time is a fundamental aspect of how the brain works. While our brains do many things unconsciously (like controlling breathing or heart rate), the kind of complex processing involved in thinking, understanding, and making sense of things happens sequentially.

The Power of Invention and Its Implications

The power of invention is fundamental to our mental lives. It allows us to find meaning in the world, understand each other, and even imagine new possibilities. Our ability to take scattered scraps of information and weave them into momentarily coherent wholes is astonishing.

This perspective has significant implications for how we understand ourselves and for practices like psychotherapy. If there are no deep, hidden motives or beliefs to uncover, then traditional forms of therapy focused on probing the “unconscious” to find the “real” reasons for behaviour might be fundamentally misguided. The problem isn’t that these depths are hard to reach, but that they don’t exist. Any attempt to “uncover” them will just result in the mind improvising stories to fit the questions asked.

However, approaches like mindfulness and Cognitive Behavioural Therapy (CBT) align well with the “mind is flat” view. These therapies often focus on helping people become aware of their thoughts and feelings not as undeniable truths, but as transient interpretations or “inventions”. By seeing our thoughts, especially negative or self-critical ones, as momentary creations rather than reflections of deep-seated flaws or hidden realities, we can learn to step away from them, criticise them, or dismiss them. This understanding can be incredibly liberating. It means that difficult emotions or negative self-perceptions aren’t messages from an infallible inner oracle, but flimsy interpretations of the moment.

The idea that there’s no deep, fixed “self” to find might initially feel disheartening. But it can also be seen as empowering. If our minds are constantly improvising and building on past experiences, we have the ability to reshape our thoughts and behaviours, one step at a time. We aren’t playthings of hidden forces; we are continually inventing and reinventing ourselves through the stories we create and the actions we take. Our freedom lies in this ability to flexibly create new interpretations and directions based on our unique history of past improvisations.

Moving beyond the common intuition of a deep, mysterious mind, the “mind is flat” perspective suggests a different, perhaps simpler, but no less remarkable picture. Our minds are not deep seas of hidden truths, but astonishingly creative improvisers, constantly inventing our reality and ourselves, one coherent step at a time.