Chapter 4: The Enactive Conception of Life

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Welcome back to the Deep Dive.

We are jumping straight into one of the real philosophical cornerstones of, well, a revolution in how we understand ourselves.

We really are.

We're talking about the movement known as 4E cognition.

Right.

That's embodied, embedded, inactive, and extended.

It's a huge framework.

A huge framework.

But today we're focusing on the E that you could argue is the foundation for all the others, the inactive conception of life.

And this deep dive is based on a foundational chapter that tackles a question that feels so simple but is almost always overlooked.

It's completely overlooked in a lot of cognitive science, even within some of the other 4E fields.

And the question is simply, what is a body?

Yeah, that sounds like one of those questions that seems obvious until you actually try to answer it.

Yeah.

If I ask my neighbor what a body is, they'll point to their arm or something.

Of course.

But in this context, it's asking something much, much deeper.

It's asking what a living system fundamentally is.

And more importantly,

what is it about that systems organization that allows it to generate a world of meaning?

Absolutely.

That's the mission here.

We're going to try and summarize the central arguments and frameworks that connect the material organization of life, the nuts and bolts of being alive,

directly to the emergence of things like mind,

individuality, and agency.

Because if we don't understand the nature of the living thing itself,

how can we possibly hope to explain its cognitive functions?

Seems like we'd be starting halfway through the story.

You would be.

You'd be assuming the source material anchors us with this really powerful quote from the French phenomenologist Maurice Melo -Ponty.

It's classic.

It is.

And it was his attempt to sort of transcend those old philosophical battles between idealism, where consciousness is primary, and empiricism, where it's all about sensory data from the outside world.

So what was his formulation?

It's just beautifully put.

He said, the world is inseparable from the subject, but from a subject who is nothing but a project of the world.

And the subject is inseparable from the world, but from a world that it itself projects.

Okay, let's unpack that for you, because it's a bit of a wonderful knot to untangle.

It is.

The second part feels more intuitive, at least from an inactive perspective.

The subject, the person, the perceiver is constantly projecting meaning onto the world.

Our experience isn't just passive reception.

No, it's active.

We're constantly creating frames, creating significance.

That's the inactive part in a nutshell.

But the first half of that statement is the real challenge.

The subject is nothing but a project of the world.

And that's what the source calls the pregnant mystery.

Our existence is tangled up in how the world gives itself to us, not as an abstract thought, but as a material flow.

But how can the world project us?

Right.

We're told to stand on non -teleological ground.

And that's crucial, isn't it?

It means we can't assume nature has a goal or an aim.

Exactly.

No cosmic plan, no telos.

So if the universe isn't an entity with a project, how can we be a project of the world?

It sounds almost mystical if you take it at face value.

It does.

You have this deep philosophical problem.

On one hand, we as agents create meaning, we project our world.

But on the other, we are the result of a meaningless, non -projecting world.

We are projected by it.

How do you bridge that gap?

And that is the absolute core challenge for any naturalistic theory of mind.

The enactive thesis really is that you can't separate the questions.

To ask how the mind works is at the same time to ask how certain material things can be minds in the first place.

And how they emerge naturally from the ground up without any magic involved.

Precisely.

The two questions are inseparable.

And this means the answer to Merleau -Ponty's mystery, how we can be a project of the world, has to be found in defining the platform that mind arises from.

And that platform is the living body.

But understood in a very specific way.

Not as hardware for the mind's software.

No, a lot of embodied approaches do that.

They treat the body as just a constraint on computation or source of data.

They assume the body is just there.

It's a given.

Right.

But for the enactive view, the body is the material condition for individuation itself.

It's not just a constraint.

It's the genesis of all meaning.

And that's why, to understand mind, we have to start with life.

Okay, that sets the stage perfectly for what is probably the central move of this entire framework.

The life -mind continuity thesis.

It is the central move.

And the source material is very careful here, because this thesis often gets, shall we say, some knee -jerk reactions.

I can imagine.

What are they?

They tend to come in two flavors.

The first is impatience.

People say, of course, mind is continuous with life.

Duh.

All the minds we know of are in living things.

What's the big deal?

They treat it as trivial.

And the second flavor.

Misunderstanding.

People oversimplify it into a slogan like, life equals cognition.

And then they immediately jump to, so is my stomach thinking when it digests my lunch?

Is a bacterium as smart as a physicist?

And they dismiss it as nonsense.

They do.

But the enactive view rejects both of these reactions.

It's not saying all life is conscious, or that a cell's cognition is the same as ours.

The deeper meaning of continuity is about three concepts that any theory of mind has to explain.

Okay.

What are they?

Individuality, agency, and subjectivity.

So any mental phenomenon, thinking, feeling, perceiving it, constitutively demands an explanation for those three things.

Yes.

And the continuity thesis claims that the conceptual tools you need to explain individuality, agency, and subjectivity in the mind are the exact same conceptual tools you need to explain the fundamental phenomenon of life itself.

Wow.

So it's not just that life is the biological support system for mind.

Not at all.

It's that the deep organizational principles of being alive are the conceptual basis for being a mind.

The fabric of cognition is woven from the fabric of life.

This sounds like it has some pretty deep philosophical roots.

The text connects it back to the American naturalist, John Dewey.

It does, specifically to his theory of logic and his definition of continuity.

Dewey's idea was brilliant.

He said continuity rules out two things.

It rules out complete rupture, you know, a sudden magical jump from one level to another.

Like consciousness just popping into existence out of nowhere.

A deus ex machina.

Exactly.

But it also rules out mere repetition of identities.

This means the higher level isn't just a more complicated version of the lower level.

There's real novelty.

So it's a continuity of difference and connection.

You avoid crude reductionism, saying mind is just biology, but you also avoid positing these huge unbridgeable gaps in nature.

That's the Philosophical Balancing Act, and it imposes a very strong requirement, both causally and ontologically.

You can't just have something like, say, huming language or a sense of morality appear fully formed without giving an account of how its emergence and its relative autonomy is grounded in what came before.

That term, relative autonomy, seems really important here.

The levels aren't completely separate, but they're not just reducible either.

How does inactivism pull this off?

How does it stay non -reductionist, but also firmly naturalistic?

It's built on three pillars of non -reduction.

The first is that you explain emergent phenomena like consciousness by looking at self -organization and complex multi -scale interactions.

You're looking for the holistic patterns, the dynamics.

The symphony, not just the individual violins.

That's a great way to put it.

Second, it replaces the old idea of totally independent levels, biology over here, psychology over there, sociology somewhere else, with this notion of relative autonomy.

The levels are distinct.

Sure, they need their own tools, but they are profoundly interdependent.

And the third pillar.

It pushes for the possibility of constantly evolving mutual dependence between levels.

The relationship between our biology and our culture, for instance, isn't fixed.

They are co -shaping each other throughout history.

So life and mind are seen as intertwined branches of the very same tree.

Which moves us perfectly into the critique of standard cognitive science.

Because if life and mind are that intertwined,

then the traditional approach, functionalism, must have a pretty big problem.

It has what the chapter calls a critical conceptual blind spot.

And that blind spot is?

It's those same three concepts,

individuality, agency, and subjectivity.

Functionalist approaches, whether we're talking classical, symbol -crunching AI, or even some more modern embodied versions, they tend to just assume these things are already there, that they're unproblematic.

They don't explain how a system becomes an individual agent to begin with.

They don't.

And that's a fundamental weakness.

You're basically starting your research by taking for granted the very thing you should be trying to explain.

How did I emerge from a world of non -A's?

So why does functionalism struggle with this?

The source says it's because it requires something called stationarity.

Yes.

And that is a technical term, but we can make it pretty intuitive.

Please do.

Give us the non -technical version.

Okay, think of a complex machine like a highly specialized robot on an assembly line.

Functionalism is great at describing what that robot does.

Its operations, its inputs, its outputs, all in terms of informational states.

For that description to work, the robot's internal machinery and its operational rules have to stay the same.

If the rules of the game are constantly changing on the fly, then your functional description, which is based on those fixed rules, just falls apart.

So a process is stationary if the underlying probabilities are stable.

The chances of a certain input leading to a certain output don't change over time.

You need a stable frame.

You need a stable frame, precisely.

Now, if your cognitive machinery changes in non -stationary, open -ended ways, if the system can literally rewrite its own operating system based on its history, then the functional explanation is, at best, limited.

At worst, it's just wrong.

But wait, living systems, and especially cognitive ones, are defined by their ability to learn and grow and develop.

That seems inherently non -stationary.

How do functionalists deal with that?

They have a compromise.

It's based on an idea from Herbert Simon about near -decomposable systems.

They basically split the problem into two different time scales.

A fast one and a slow one.

Exactly.

The fast time scale is the settled stationary functional system.

That's the robot doing its job.

The slow time scale is where change happens, but it's governed by fixed rules, like fixed plasticity rules in a neural network.

I see.

So the system can change, but the rules for changing are themselves stationary.

They've just pushed the messy non -stationary part into a bigger box that they hope is stable.

That's the compromise.

But here's the inactive challenge, and it's a big one.

The two most fundamental questions for a naturalistic theory of mind are, one, what constitutes a cognitive system in the first place?

And two, how does a world of significance get created for that system?

Both of those questions demand a non -stationary, transformative story.

So the very act of becoming a cognitive system, of setting up a frame of meaning, is itself a frame -changing process.

It can't be stationary.

Think about it.

Functionalism has to assume that once the system is built, we can treat it as stable.

But all the evidence we have from development, from evolution, from learning shows that this is a deeply questionable assumption.

And what's the conceptual link between stationarity and individuality?

Why are they at odds?

Because individuality, in the way we need for cognition, means being a center of activity and perspective.

A cognitive system is an individuated entity that takes a stance on the world.

It's what makes things matter to it.

Things matter because they affect its ability to continue being an individual.

Its existence is at stake.

Exactly.

And that process of individuation can't be a one -time achievement.

It has to be an ongoing, open, and fundamentally precarious process.

And that is a non -stationary process.

The constant possibility of unpredictable, frame -breaking change is what it is to be a living cognitive system.

So if functionalism can only handle systems that are, or can't be approximated as stationary, then it logically has to fail when it comes to the most fundamental aspects of life and mind.

And that failure to account for individuality leads straight to a failure to account for agency.

How so?

Well, without understanding what's at stake for whom, you can't tell the difference between meaningful action and mere physical reaction.

Functionalism, unless you add an external human interpretation,

can't distinguish between a system that's just coupled to its environment, like the Earth and the Moon and their gravitational dance, and an agent acting in a meaningful world.

Right.

The planets are coupled.

They affect each other constantly.

But nothing is at stake for the planet.

Its existence as a planet doesn't depend on that coupling in the same way.

Precisely.

The inactive approach insists you have to explain the stakes, that precarious existence of the individual, before you can even begin to talk about how cognition works.

So to go back to Merleau -Ponty's mystery, functionalism fails because it can't explain how the system went from being nothing to being a project of the world.

It just assumes the project is already up and running on stable software.

We need a concept of life that can generate that project from the ground up.

Okay, so to build that non -stationary agentive foundation,

the inactive view looks back, historically at least, to a very influential theory from the 1970s, autopoiesis.

Yes, autopoiesis, or self -production, developed by Humberto Maturana and Francisco Varela.

And this was their attempt to give a really rigorous, systematic answer to that question.

What is a living system?

It was.

And they adopted a systems theory approach.

They shifted the focus away from inputs and outputs, away from representations, and focused entirely on the system's organization.

And that distinction between organization and structure is really important.

Let's make that super clear for everyone.

It's critical.

Structure is the actual physical stuff, the specific molecules, their concrete arrangement at this very moment.

Organization, on the other hand, is the abstract set of relations between components that defines what kind of thing it is.

If you define the organization, you define a whole class of systems.

So the organization is like the blueprint, and the structure is the actual house built from that blueprint.

Perfect analogy.

And for any particular system, what defines its identity through time, its hexity, its thisness, is the conservation of that organization.

This is the classic ship of Theseus problem, isn't it?

My body replaces almost every atom every seven years or so.

So structurally, the 40 -year -old me is completely different from the seven -year -old me.

Completely different.

But organizationally, you are the same individual.

That's the power of the concept.

Your hexity is that conserved organizational pattern, even as all the matter flows through you.

Okay, so classical autopoiesis focused entirely on this conserved internal organization.

But it ran into some big criticisms right away.

Two major ones stand out.

First, it was so abstract that people argued it could apply to nonliving things, like a whirlpool or maybe even an economy.

It lacked material and temporal constraints.

And the second criticism was even more important for what we're talking about today.

Much more important.

It rigorously excluded what it called relational properties.

Relational properties being?

Things like being an offspring, or being able to reproduce, or belonging to a species.

Classical autopoiesis said those things only exist in the mind of the human observer.

They aren't part of the system's intrinsic operational reality.

Wait, that seems incredibly counterintuitive.

Reproduction is like the hallmark of biological life.

How could they exclude it?

Because they wanted a definition that was strictly observer -independent, based only on the system's here and now relations that constitute it.

If you start talking about what it could do, like reproduce or what it was, an offspring, they felt you were imposing your own cognitive frame on it.

But critics pointed out that even seeing the autopoietic network requires an observer to choose the right scale, right?

The cellular level, the right time scale.

So it was never fully observer -independent anyway.

That was the counter -argument.

Once you pick a scale to observe, reproduction is just a fact about the system, not some arbitrary label you've applied.

And that really strong internalism, that focus only on internal operations, is what the later inactive view had to overcome to explain things like agency and meaning.

But let's get the core definition down first.

What are the two organizational conditions for autopoiesis?

Okay, so an autopoietic system is a network of molecular processes that's subject to two key conditions.

The first is the self -production condition.

The network of processes has to continuously produce its own components.

It's constantly regenerating itself from within.

And the second condition is what makes it a distinct thing.

Exactly, that's the self -distinction condition.

Those same ongoing processes have to constitute the network as a concrete unity in space.

They have to form a boundary that distinguishes the system from its environment.

So the end result is a system that is constantly building itself.

And in the very act of building itself, it carves out its own identity, making itself distinct from everything else.

That's autopoiesis.

So while autopoiesis gave us this core idea of self -definition, the inactive framework and Varela himself saw its limits, especially that very strict internalist view.

Yes, Varela started moving toward a broader concept of autonomy.

But the really big shift came when he introduced two new ideas that connect life to mind,

precariousness and adaptivity.

And these are the conceptual bridges we need.

Adaptive autonomy, then, is the grounding for the very first layer of teleology of goal -directedness and normativity.

Right.

It's what allows a system to generate norms, to have things that matter for it, for its own survival.

And that is the conceptual ground for sense -making, for mind.

Before we get there, let's just quickly revisit the problem with the old view.

Classical autopoiesis said the environment could only trigger changes in the system.

Yes.

The system's response was determined entirely by its own internal dynamics.

The analogy is pressing a button on a machine.

Your finger is just a trigger.

The machine's wiring determines what happens next.

This led to a pretty strong dualism, didn't it?

You had the internal domain of self -construction and the external domain of relations.

And they were seen as basically separate.

Non -intersecting domains.

The only link was what they called structural coupling, which was a very minimal idea.

It just meant the external world couldn't do anything that would destroy the system's internal organization.

And Varela later realized this led to a solipsistic reading.

Like, the organism is just in its own little bubble, being occasionally poked by an outside world it doesn't really interact with.

He did.

In 1996, he wrote a famous self -correction.

He criticized that idea of structural coupling as too weak, saying it left interaction in the fog of being a mere perturbation.

He needed something stronger.

And that stronger thing was co -definition.

Co -definition.

Or historical reciprocity.

He realized that the long history of interaction leads to the organism and the world shaping each other.

You can't reduce those regularities to just the internal dynamics anymore.

This is a huge shift.

From just not being destroyed by the world to actively co -defining the world.

And this brings us back to the two original requirements of life.

Self -production and self -distinction.

How do they create what the chapter calls the primordial tension of life?

They create a tension because, in their ideal forms, they demand opposite relationships with the environment.

They're locked in a constant push -pull.

OK, so let's walk through the two impossible extremes that life has to navigate between.

First, ideal self -production.

Right.

To keep regenerating itself, to pull in matter and energy, the organism would ideally want total openness.

Just absorb everything from the environment without any barriers.

But what happens then?

It just dissolves.

It loses its distinction.

It's no longer an individual system.

It loses its hayseed.

Precisely.

Now, what about the other extreme?

Ideal self -distinction.

OK, so to be a perfectly distinct, unified thing, the organism would want total closure.

A perfect shield.

Total robustness against any outside influence.

But then it can't get any matter or energy.

It's completely isolated.

It would run down and die, violating the laws of thermodynamics that keep it far from equilibrium.

So life is impossible at either extreme.

Total openness is dissolution.

Total isolation is decay.

This is the primordial tension.

The organism has to be closed to be an individual, but open to stay alive.

And the classical theory never really explained how a system actively manages this contradiction.

The flow of matter and energy across its boundary can't just be random.

It has to be regulated.

It has to be regulated.

And the only way out of this tension is what the source calls a dialectical overcoming.

The living system has to be a dynamically adaptive system.

It has to be an agent that actively regulates those flows.

It's actively choosing what to let in and what to keep out.

It's managing its own boundary conditions to serve both needs.

Yes.

It's selecting what helps self -production and blocking what threatens self -distinction.

You know, this completely reframes what life is.

It's not a stable state of being.

It's a constant active process of managing risk.

It connects perfectly to the floss for Hans Jonas, who described life as a dialectical relation of needful freedom.

He said that organisms identity isn't its matter, but the risky ongoing adventure of writing material changes like a crest of a wave.

That's a beautiful image.

And this overcoming is an ongoing achievement, right?

Not something you do once.

It's constant.

Life in the inactive view is inherently dynamic and at risk.

Mutual shaping of their operating conditions.

The organism changes the environment.

And that changed environment changes the conditions for the organism's survival, which in turn changes the organism.

It's a virtuous or sometimes vicious cycle.

How do we define this adaptivity in an operational way?

How does the system actually do this at the edge of viability?

Okay.

So adaptivity is the system's capacity, specifically when it's in what are called precarious regions, when it's close to that boundary of viability, to regulate itself.

And it involves two clear actions.

Okay.

Action one is recognizing the danger.

Essentially, yes.

The system has to be able to distinguish whether its current state is moving it towards that boundary or away from it.

It's a self -generated assessment of danger versus safety grounded in its own continued existence.

And then action two is the intervention.

It has to actively intervene.

It has to transform those tendencies that are moving it toward the boundary into tendencies that move it away.

It's actively preventing its own destruction.

This regulation based on the self -generated norm of survival is what makes it adaptive.

And that adaptive action is what shapes the system over time.

This must have required a conceptual shift away from the old models of systems where the future state is just determined by the current internal state.

A huge shift.

And active theory doesn't deny that for a mathematically isolated system, that model works.

But living systems are never isolated.

They're constantly being pushed and pulled by time -dependent things in the world seasons, predators, other organisms.

The world forces non -stationarity onto them.

And the end of theory also adopts a broader ontology, a different view of what's real.

It does.

It accepts the concrete reality of things like potentialities, virtualities, and dispositions.

These are operationalized with concepts like dynamical landscapes.

So the environment isn't just an input stream.

It's a source of couplings that makes the old simple state determination model totally insufficient for life.

The system's own rules have to change.

And this non -stationary adaptive mutual shaping is what establishes the coherences between the organism and its world.

These coherences then become the constraints and the affordances that literally build the organism's body and mind.

Yes.

And to really get a grip on this, we need to look at some of the amazing empirical evidence for it.

OK.

Let's start with a really striking one.

The underwater vision of the Mokan children.

This seems like a perfect case of the environment physically changing biology.

It's a phenomenal example.

The Mokan are a seafaring people in Southeast Asia, and they dive for food without any goggles or masks.

Researchers found their underwater vision is about twice as sharp as European children's.

But on land, their vision is the same.

Identical.

The difference is purely underwater.

And the physiological mechanism is that the Mokan children have learned to make their pupils significantly smaller, which reduces the refractive error from the water.

It sharpens the image.

OK.

How do we know this isn't just a genetic trait they've evolved over centuries?

That is the crucial question.

And the research showed it's not.

It's associated with the regular performance of diving.

They took a control group of Swedish children, gave them just one month of training in underwater pattern recognition, and they showed the same pupil constriction and the same improved acuity.

Wow.

So the active and acted relationship with the environment, the activity of diving,

historically shaped the physical structure and function of their bodies.

The body literally reconfigured its hardware because of what the individual was doing in its world.

That is co -definition and action.

That's incredible.

What about examples that bring in the social or collective dimension?

Well, you can see it in something as fundamental as bacteria engaging in horizontal gene transfer.

They literally trade bits of genetic material, like plasmids, which can get incorporated into their own chromosomes.

Which can change their basic capabilities, like giving them antibiotic resistance.

Exactly.

It's a structural transformation of the organism driven by a kind of social interaction, which then changes the evolutionary landscape for the whole collective.

And there's that classic epigenetic example with maternal care in rats.

That shows how interaction can be formative, even when it's not a life or death situation.

Yes, the stress response study.

It's a perfect illustration of this historical effect.

If a mother rat doesn't lick and groom her pups enough in the first two wits, those pups grow up with a lifelong, deficient ability to regulate stress.

And the mechanism is?

The physical stimulation from the mother's grooming actually promotes the formation of something called glucocorticoid receptors, or GR in the pups' brains.

These receptors are vital for the negative feedback loop that shuts down the stress response.

So not enough grooming means not enough GR, which means the feedback loop is broken.

The pups grow into anxious adults.

And they often become poor mothers themselves, perpetuating the cycle.

The failure of that interactive path leads to a fundamental structural deficit that lasts a lifetime.

The enacted relation, the licking, is what explains the regularity of these effects.

So by actively regulating its interactions, whether it's diving for food, trading genes, or grooming its young, the organism isn't just passively receiving inputs.

It's actively objectifying its sense -making out there in the world.

Which leads to these really powerful concepts like niche construction.

Right, where organisms literally build parts of their environment, beavers building dams, or the book mentions mole crickets building sound -amplifying burrows.

They transform the environment.

And that transformed environment then structures their future possibilities.

And sometimes this can go so far as to become extended autonomy.

Where the physiological circuits of the organism actually extend out into the world.

Yes, things like coral, which are functionally inseparable from the algae and physical structures around them.

Or an insect that traps an air bubble to breathe underwater.

Effectively extending its own respiratory system into a self -created niche.

And finally, this whole process of co -definition just explodes in power when you consider the collective dimension.

It does.

A single organism is limited in how much it can shape its world.

But when you think about collectives organisms interacting not just with rocks and water, but with the products of other organisms, with sedimented histories of action, the whole process is potentiated.

The real protagonists of co -definition might not be individuals at all.

But entire collectivities and their shared history.

Exactly.

This has been an incredibly rich deep dive.

So let's bring it all back to Merleau -Ponty's starting point to wrap this up for you.

The subject projects a world and is itself projected by the world.

And now, based on this inactive conception of life, we can give that a concrete meaning.

The subject is projected by the world because our very individuality, our agency, our sense -making is constituted by this long history of adaptive organism -environment relations.

Our existence depends on that regulated dance.

The source material highlights two main contributions that this inactive view makes moving beyond even classical autopoiesis.

The first is that the conditions of life are constitutively precarious.

Life is a dialectical process of managing the contradiction between being open and being closed.

It's an ongoing struggle.

This confirms that idea that inactive bodies are constantly, fundamentally buying time.

And the second key contribution.

It's the importance of seeing life and mind as plural from the start.

That mutual co -definition really gets its power from the collective.

We self -differentiate and create shared worlds through shared interaction.

The process of becoming an individual might actually require a collective to begin with.

And that leads us to the final provocative thought to leave you with.

We've established that a single organism has its limits.

Which raises a really powerful open question.

Should we conclude that life and therefore the foundations of mind can't even arise singularly?

Does it require a constitutive collectivity the same way you need a collection of water molecules to get the property of wetness?

Does the emergence of this adaptive operational closure inherently demand multiple interacting agents from the very beginning?

It's a deep question to ponder.

That existence itself might be inherently a team sport.

I think you now have a much clearer grasp on why the inactive approach insists that before you can ask and how does the mind work, you first have to ask what is a body and how is it buying time in this world.

Thank you so much for joining us on this deep dive.