PART II: The Intelligence beneath thought

What the Body Knows Before the Mind Understands

“We know more than we can tell.” — Michael Polanyi

From Living Computers to Living Bodies

The previous chapter explored a striking possibility: that living neurons may one day complement conventional computing. It challenged the assumption that intelligence belongs either to biological brains or to silicon machines.

Before looking further into the future, however, it is worth pausing to examine something even more remarkable: the human body itself.

Long before humanity built computers, the body had already solved problems that continue to challenge engineers. It maintains balance while walking over uneven ground, coordinates hundreds of muscles in precise sequence, reacts to danger in fractions of a second and acquires complex physical skills that eventually seem to operate without conscious effort.

Because these achievements feel ordinary, they are rarely noticed.

In reality, they are extraordinary.

Every moment of every day, the body performs calculations so intricate that even modern robotics struggles to reproduce them. No conscious mathematics determines the force needed to lift a cup, adjust posture while climbing stairs or maintain balance while turning to greet a friend. These actions simply happen.

The obvious question is also the profound one.

If conscious thought is not directing every movement, what is doing the work?

The Body Is Not Waiting for Instructions

Popular language often suggests that the brain functions like a chief executive issuing commands while every other organ obeys.

Neuroscience presents a richer picture.

The nervous system resembles a vast network rather than a rigid hierarchy. The brain certainly plays a central role, but many essential functions are distributed across specialised circuits operating continuously, often without conscious awareness.

The heart beats without permission.

Breathing continues during sleep.

Pupils adjust automatically to changing light.

A hand withdraws from a hot surface before pain is fully recognised.

These processes do not make the brain unnecessary. They reveal how evolution has delegated many vital tasks to specialised neural systems capable of responding far more rapidly than conscious thought alone could manage.

Imagine trying to survive if every heartbeat required deliberate attention or every step demanded careful calculation. Consciousness would quickly become overwhelmed.

Nature solved that problem long before human beings began asking questions about artificial intelligence.

The Reflex That Protects

Touch the side of a hot pan.

The hand jerks away almost instantly.

Only afterwards does conscious awareness catch up.

This familiar experience demonstrates one of the nervous system’s most elegant survival strategies. Sensory nerves carry information towards the spinal cord, where specialised neural circuits rapidly coordinate an appropriate response before the signal has fully reached the regions of the brain responsible for conscious awareness.

The brain is informed almost immediately afterwards, allowing understanding, learning and memory to follow.

Nothing mystical is taking place.

Nothing bypasses the brain altogether.

Evolution has simply created a partnership in which certain urgent protective responses rely less upon slower conscious processing.

In such moments, speed saves lives.

When Practice Changes the Brain

Consider a child learning to ride a bicycle.

At first, every movement demands concentration. Where should the feet go? How tightly should the handlebars be held? How is balance maintained?

Mistakes are frequent because conscious thought supervises almost every action.

Weeks later, something changes.

The child rides while talking to friends, watching the road ahead or thinking about something entirely different. The bicycle seems almost to steer itself.

Of course, it does not.

Repeated practice has strengthened neural pathways until many elements of the task require far less conscious attention.

Musicians experience the same transformation.

So do surgeons, craftsmen, dancers, athletes and experienced drivers.

With sufficient repetition, carefully learned skills become deeply embedded within networks distributed across the brain and nervous system. Conscious thought remains available when circumstances change, but routine execution becomes increasingly fluid.

The phrase “muscle memory” is scientifically imprecise; muscles themselves remember nothing. Yet the expression captures an important truth.

The body begins to move with a confidence that conscious instruction alone could never achieve.

The Hidden Architecture of Skill

Watching an accomplished violinist perform or a master carpenter shape wood can create the illusion of effortless movement.

The opposite is true.

Effort has not disappeared; it has become invisible.

Years of disciplined practice have gradually reorganised countless neural connections until complex sequences unfold with remarkable precision.

The same principle explains why experienced typists rarely look at their keyboards, why seasoned pilots can respond calmly during emergencies and why skilled athletes often describe entering a state in which action seems to flow without deliberate calculation.

Psychologists call such experiences flow—periods of deep concentration during which self-consciousness recedes and performance feels unusually smooth and unified.

Flow is not magic.

Current research suggests that, during such states, the brain reduces certain forms of conscious monitoring while allowing highly practised neural networks to operate with greater freedom.

Paradoxically, thinking less can sometimes allow years of careful learning to express themselves more completely.

The Wisdom of Evolution

These observations reveal something important about intelligence.

Intelligence is not merely the ability to reason abstractly. It is also the capacity to adapt, coordinate, anticipate and respond effectively within changing environments.

Evolution has been refining these capabilities for hundreds of millions of years.

Every successful organism carries solutions to problems that earlier generations survived long enough to pass on.

The human nervous system is therefore not an invention assembled from scratch. It is an ancient inheritance, continually modified, expanded and refined across countless generations.

Artificial intelligence seeks to reproduce aspects of this remarkable adaptability.

Before assuming that machines will inevitably surpass biological intelligence in every respect, it is worth remembering how sophisticated biology already is.

The closer the body is examined, the less ordinary it appears.

The Chicken That Keeps Moving

Few sights are more unsettling than a chicken continuing to run briefly after decapitation.

For centuries, such incidents fuelled folklore and superstition. Neuroscience offers a far more interesting explanation.

The nervous system is not a single control centre issuing every command directly. It resembles a federation of specialised networks, each responsible for different functions and capable of operating with varying degrees of independence.

Within the spinal cord lie neural circuits known as central pattern generators. These networks can produce rhythmic movements such as walking, running or swimming without requiring conscious instructions for every muscle contraction.

In living animals, these circuits normally operate under the guidance of the brain. Under certain circumstances, however, they can continue functioning briefly even when communication with higher brain centres has been interrupted.

The phenomenon is neither miraculous nor evidence that consciousness resides elsewhere in the body.

It is a reminder that complex behaviour does not always require continuous conscious supervision.

The Body’s Ancient Software

Imagine learning to play the piano.

During the first lesson, every finger movement feels awkward. Each key must be located consciously.

Months later, the same piece seems almost to play itself.

Something similar occurs throughout the nervous system.

Repeated practice gradually transfers many routine operations from slow, effortful conscious control to faster and more efficient neural pathways. The brain does not abandon the task; it delegates much of the detailed execution to circuits that have become highly practised.

In this sense, the nervous system resembles a well-managed organisation.

Strategic decisions remain centralised.

Routine operations become distributed.

Far from reducing intelligence, this arrangement allows intelligence to flourish.

Without it, every ordinary activity—from fastening a shirt to walking across a room—would demand exhausting mental effort.

Nature solved the problem through elegant biological engineering long before engineers attempted to solve it electronically.

When Instinct Outruns Deliberation

Human beings rightly admire careful reasoning. Much of civilisation depends upon the ability to think before acting.

Yet survival has always required something else as well: the capacity to respond immediately when time does not permit prolonged reflection.

A goalkeeper diving to stop a penalty kick does not calculate the trajectory consciously.

A mountaineer slipping on loose rock does not analyse physics before regaining balance.

A driver confronted by a child running into the road often brakes before fully understanding what has happened.

Such responses do not mean that thought has disappeared. They demonstrate how the nervous system integrates years of learning with rapid subconscious processing, enabling action to precede deliberate explanation.

Only afterwards does conscious thought reconstruct the sequence.

The body has already begun solving the problem.

Lessons from Mastery

Beginners in any skilled discipline think about every movement.

Where should the foot go?

When should the hand strike?

How should the body turn?

Experts no longer ask these questions.

Years of disciplined repetition have transformed isolated techniques into coordinated patterns requiring far less conscious intervention.

This is sometimes misunderstood as bypassing the brain.

Neuroscience suggests something subtler. Extensive practice reduces reliance upon conscious cortical processing while strengthening well-established neural networks responsible for rapid, coordinated action.

The brain remains fully involved.

Its mode of involvement changes.

The result is not mindlessness but fluency.

The same principle applies to surgery, music, aviation, competitive sport and countless skilled professions.

Mastery appears effortless precisely because immense effort has already been invested.

The Snake That Sees Heat

Nature offers even more astonishing examples of specialised intelligence.

Pit vipers possess organs capable of detecting infrared radiation, allowing them to locate warm-blooded prey even in near-total darkness.

To human observers, such an ability can seem almost supernatural.

In reality, it reflects millions of years of evolutionary refinement. Specialised receptors detect minute temperature differences, and dedicated neural pathways transform those signals into extraordinarily precise behavioural responses.

The snake is not consciously performing thermal calculations.

Its nervous system has evolved to make those calculations automatically.

Once again, intelligence reveals itself not simply as conscious reasoning but as highly effective adaptation.

What Intelligence May Really Be

These examples encourage a reconsideration of a deeply rooted assumption.

Intelligence is often equated with conscious thought.

Biology suggests a broader definition.

Intelligence may be understood as the capacity of a living system to acquire information, adapt to changing circumstances and generate appropriate responses that enhance survival or achieve meaningful goals.

Under that definition, intelligence operates across many levels.

Cells respond intelligently to their chemical environment.

The immune system distinguishes friend from foe with astonishing precision.

The spinal cord coordinates complex movement.

The brain integrates perception, memory, imagination and reasoning into the rich experience called consciousness.

Rather than competing with one another, these layers cooperate.

Human intelligence is therefore less like a single spotlight and more like an orchestra.

Each section performs its part.

Meaning emerges from their coordination.

The Question Machines Now Face

This insight brings the discussion back to artificial intelligence.

Much public debate assumes that creating intelligent machines simply requires building faster processors or training larger language models.

Biology suggests that the challenge may be deeper.

The extraordinary adaptability of living organisms does not arise from raw computational power alone. It emerges from countless interacting systems operating simultaneously, each specialised, interconnected and continuously learning from experience.

That complexity helps explain why reproducing human intelligence remains so difficult.

Artificial intelligence has achieved remarkable successes in language, image recognition and scientific discovery. Yet the effortless coordination displayed by a toddler learning to walk or an experienced carpenter shaping wood still reflects a level of embodied intelligence that engineers continue to study with admiration.

The closer science examines living systems, the clearer it becomes that intelligence is not merely computation.

It is organisation.

It is adaptation.

It is relationship.

Understanding that distinction prepares the ground for the next stage of the journey.

If intelligence is distributed throughout the living body, another question naturally follows:

How much of what human beings become is shaped before birth, and how much is written afterwards through family, culture, experience and opportunity?

That question leads into one of the most debated frontiers of modern science: inheritance.

(End of Part II. Next: Part III — The Echoes We Inherit: Genes, Family, Memory and the Making of Human Potential.)

(Author: kgsharma1@gmail.com; The writer is a retired officer of the Indian Information Service and a former Editor-in-Charge of India’s national broadcasters. Also worked as an international media consultant with UNICEF Nigeria and contributes regularly to various publications.)