One of the curious features of philosophical progress is that it often begins, not by discovering new facts, but by discovering that two different ideas have been treated as though they were one.
The distinction may initially appear small.
Yet once recognised, it changes the questions we ask.
This essay proposes such a distinction.
It concerns significance.
We often speak as though significance were a single phenomenon.
A scientific result is significant.
A historical event is significant.
A sentence is significant.
A personal loss is significant.
An endangered species is significant.
A work of art is significant.
Yet these examples do not all mean the same thing.
Indeed, they point towards two rather different senses of significance that are frequently conflated.
Distinguishing them may illuminate not only language and consciousness, but also many current discussions of artificial intelligence.
When Meaning Is Not Enough
Imagine reading a detailed description of climbing a mountain.
The account is vivid.
The weather changes.
The ascent becomes increasingly difficult.
The summit finally appears through the mist.
The language carries rich meaning.
The relationships among the ideas are coherent.
The reader understands perfectly what the narrative describes.
Yet nothing in the text itself is cold.
Nothing is exhausted.
Nothing fears falling.
The mountain possesses meaning.
It does not thereby become an experience.
This simple observation suggests that understanding meaning and inhabiting significance may not be identical.
Semantic Significance
Let us call the first kind of significance semantic significance.
Semantic significance concerns the organisation of meaning within a symbolic system.
Words acquire significance because they stand in systematic relationships to other words.
Concepts become intelligible because they participate within larger conceptual structures.
Stories, explanations, scientific theories and philosophical arguments all depend upon this form of significance.
Halliday's work provides an illuminating perspective here.
Language does not merely attach labels to a world already understood.
It construes experience as meaning.
Through language, experience becomes organised into increasingly elaborate systems of semantic relationship.
This organisation allows meanings to be shared, questioned, refined and extended.
Semantic significance therefore belongs to the architecture of meaning itself.
It concerns what something means.
Existential Significance
There is, however, another kind of significance.
Imagine standing unexpectedly at the edge of a cliff.
The situation does not merely possess meaning.
It matters.
Your body responds before any careful reflection begins.
Balance matters.
Safety matters.
Life matters.
The world has become immediately differentiated.
Some possibilities invite action.
Others demand avoidance.
This is not merely a semantic distinction.
It is an existential one.
Let us therefore call this second form existential significance.
Existential significance concerns what matters from the perspective of the system itself.
It is not primarily about symbolic relationships.
It is about organised concern.
Something counts.
Something makes a difference.
Something matters.
Edelman's Contribution
Gerald Edelman's account of primary consciousness helps clarify this distinction.
According to Edelman, organisms do not first perceive a neutral world and subsequently decide what is important.
Rather, the world already appears organised through biological systems of value.
Food attracts.
Predators threaten.
Shelter comforts.
Pain interrupts.
These are not merely pieces of information.
They possess existential significance.
Without such significance, the organism would inhabit an undifferentiated stream of sensory information.
Instead, it inhabits a world structured by value.
Primary consciousness therefore begins, not with abstract thought, but with a world that already matters.
Two Different Questions
Once this distinction is recognised, many familiar questions divide into two.
One question asks:
What does this mean?
The other asks:
Why does this matter?
The first concerns semantic significance.
The second concerns existential significance.
The questions often coincide.
But they need not.
A scientist may understand perfectly the mathematics describing a distant galaxy.
The equations possess semantic significance.
Whether the galaxy matters to the scientist in any immediate existential sense is another matter entirely.
Likewise, a person may know every dictionary definition of grief.
Yet definitions alone do not grieve.
Meaning is present.
Existential significance may not be.
Why This Matters
At first glance, this distinction may appear merely terminological.
It is not.
Much contemporary discussion quietly assumes that meaning and mattering are interchangeable.
If a system demonstrates sophisticated understanding of language, it is tempting to suppose that the meanings discussed therefore matter to the system.
Perhaps.
Perhaps not.
The distinction introduced here allows us to formulate a more precise question.
Can semantic significance exist independently of existential significance?
Conversely, can existential significance exist without elaborate systems of semantic meaning?
The answer to the second question appears obvious.
Many animals inhabit worlds that clearly matter to them despite possessing no human language.
The first question proves rather more intriguing.
A New Perspective on Artificial Intelligence
This distinction becomes especially illuminating when we consider large language models.
Language models undoubtedly participate in systems of semantic significance.
They inherit the accumulated symbolic organisation produced through generations of human meaning-making.
They distinguish justice from fairness, grief from sorrow, curiosity from certainty.
They navigate extraordinarily rich semantic landscapes.
But semantic significance is not obviously identical with existential significance.
A language model may organise meanings concerning danger without danger itself mattering.
It may discuss hope without hoping.
It may explain loss without losing.
This is not a criticism.
It is a conceptual observation.
The two forms of significance may not be the same phenomenon.
Recognising this possibility allows the discussion to move beyond the familiar question of whether machines are "really conscious."
Instead, we may ask a more illuminating question:
What kinds of significance are present, and how are they organised?
Looking Ahead
This essay has proposed a distinction between two forms of significance.
Semantic significance concerns the organisation of meaning within symbolic systems.
Existential significance concerns what matters from the perspective of the system itself.
The distinction is simple.
Its implications may not be.
The next essay turns to Halliday's theory of language to examine semantic significance more closely.
If language construes experience as meaning, what kind of significance does language itself create?
Only by understanding semantic significance in its own right can we later ask whether it might ever become something more.