A friend tells you that a favourite café has closed.
The words are simple.
Yet they change something.
Not the café.
Not the street.
Not even the memory of your last visit.
They change what is now possible.
Tomorrow's walk will be different.
Future conversations will be different.
Expectations have shifted.
Something has happened.
We often say that information has been transmitted.
The image is familiar.
A message travels from one mind to another.
Information passes between people like a parcel changing hands.
It is an appealing picture.
But does it describe what actually occurs?
Consider another example.
A flock of birds wheels suddenly across the sky.
One bird changes direction.
Then another.
Then hundreds.
What has been transmitted?
No sentences have been spoken.
No messages exchanged.
Yet the organisation of the flock changes almost instantly.
Or consider a seed.
Rain falls after months of drought.
The seed begins to germinate.
Did the rain contain information?
Or did the relation between rain and seed reorganise what was now possible?
These examples invite a different way of thinking.
Perhaps information is not a thing that moves from one place to another.
Perhaps it is a change in the organisation of possibilities.
Notice what all these examples share.
Something becomes newly available.
Something becomes newly constrained.
Some possibilities open.
Others disappear.
The friend no longer plans to meet at the café.
The flock no longer flies in quite the same way.
The seed no longer remains dormant.
Information, then, is neither the rain nor the words nor the movement of the first bird.
It is the reorganisation of what can happen next.
This is why information cannot be understood apart from meaning.
Without meaning, nothing is reorganised.
A sound remains only a sound.
A pattern remains only a pattern.
Information is not carried by a signal alone.
It arises through the relation between an organised world and an organised participant.
This also explains why the same event may inform one participant but not another.
A page of mathematics may transform the understanding of a physicist.
It may remain almost opaque to someone encountering it for the first time.
The page has not changed.
The participants have.
Information therefore cannot be measured simply by counting symbols or signals.
Its significance depends upon how possibilities are reorganised.
We now begin to see why information and meaning should never be confused.
Meaning organises experience.
Information reorganises the possibilities within that organisation.
One gives continuity.
The other gives transformation.
Neither exists without organisation.
Neither can be reduced to the other.
This also helps explain why living systems are so deeply informational.
Every organism continually reorganises its participation in relation to changing conditions.
A scent.
A shadow.
A change in temperature.
A sound in the undergrowth.
None of these carries information by itself.
Each becomes informative through the changing organisation of participation.
The same is true of human life.
A conversation alters relationships.
A scientific discovery reorganises inquiry.
A new law reorganises institutions.
A poem reorganises the possibilities of feeling and reflection.
In every case, information is not something added to the world.
It is the reorganisation of what the world now makes possible.
Perhaps this is why information has become so difficult to understand.
We have become accustomed to treating it as though it were a substance.
Something stored in books.
Encoded in computers.
Sent across cables.
Certainly books, computers and cables all participate in informational processes.
But none contains information in isolation.
Information exists only where organised possibilities are reorganised.
It belongs not to things but to relations.
We have now travelled a long way.
We began this trilogy by asking what a thing is.
We discovered that things are better understood as organisations of possibility.
We found that participation actualises those possibilities.
That value coordinates participation.
That meaning gives participation continuity.
We can now add one final insight.
Information is the continual reorganisation of those possibilities through changing relations.
Nothing has changed.
The world is still full of birds, cafés, rain, conversations and books.
Except that we have begun to notice that information is not something the world contains.
It is what happens whenever organised possibilities become differently organised.
And perhaps that is where this book was always leading.
Reality is not built from things.
Nor from information.
Nor even from meanings.
It is the continual becoming of organised possibility.
Everything else participates within it.