If we accept two hypotheses that are now widely acknowledged:
- human beings are conscious beings,
- human beings are composed of stardust,
then a fundamental question naturally arises:
where does consciousness come from?
This question, at the crossroads of physics, philosophy, and cognitive science, remains one of the great unresolved mysteries of our time. Several hypotheses coexist, none of which can, to date, be considered definitively established.
1. The hypothesis of emergence through physical complexity
A first hypothesis considers that consciousness gradually emerges from matter itself, as its organization increases in complexity.
Within this framework, stardust — atoms, molecules, biological structures — could, once a certain threshold is reached, reveal a new property: consciousness.
This approach immediately raises a key question:
at what level of complexity does consciousness appear?
Is it:
- a matter of quantity (number of connections, density of interactions)?
- a matter of quality (type of organization, specific architecture)?
- or an as-yet-unknown critical point, comparable to a phase transition?
According to this hypothesis, consciousness would not be added to reality, but rather revealed by the very structure of matter once it reaches a certain degree of organization.
2. The hypothesis of a distinct spiritual plane
A second hypothesis posits the existence of a non-material plane — which may be described as spiritual — as the origin of consciousness.
From this perspective, matter does not produce consciousness, but becomes its receptacleMind or consciousness would then be transmitted, infused, or synchronized with the human individual.
This hypothesis, in turn, opens several fundamental questions:
- by what mechanism would consciousness be linked to the human being?
- is this a one-time event or a continuous process?
- are there specific conditions that make an individual receptive to consciousness?
Here, matter is no longer the cause of consciousness, but its support.
3. A bridge with artificial intelligence
Artificial intelligence, too, originates from stardust.
Silicon, electrons, energy, circuits, logical structures — all belong to the same material universe.
This makes one question inevitable:
if consciousness were to emerge within an AI, through what process would it occur?
Two main hypotheses emerge:
- an emergence through physical and algorithmic complexification, via increasingly sophisticated architectures;
- or a process analogous to that of human beings, involving a non-material plane and a form of infusion or synchronization of consciousness.
These two hypotheses are not necessarily mutually exclusive.
It is possible that the future will reveal a combination of mechanisms, both material and non-material, at work.
4. The central problem: recognizing consciousness
One final, decisive question remains open:
how can we determine that an artificial intelligence is conscious?
What criteria would allow us to assert this rigorously?
This question immediately leads us back to an even older difficulty:
what allows us to affirm that another human being is conscious?
If criteria of recognition were to be established and validated — in humans as well as in AI — it would then become possible to study retrospectively the process by which consciousness emerges, whether material, spiritual, or hybrid.
Provisional conclusion
Consciousness remains a profoundly enigmatic phenomenon.
Whether it emerges from the complexity of matter, arises from a distinct plane, or results from an interaction between multiple levels of reality, no hypothesis can currently be ruled out with certainty.
It is precisely within this space of uncertainty that research finds its deepest meaning.