It seems to me that neurosemiosis, or mental processes involving signs, or producing meaning, is the act of modeling itself. — Harry Hindu
Yes. That is what I was saying.
Putting it simply, semiosis is the construction of a meaningful relation between a self and world using a (meaningless) code.
The code is the hinge point of the affair. To connect the physical and the informational aspects of reality efficiently, it must itself be the least of both. It must be a system of signs or symbols that effectively costs no material effort, and also carries no informed or meaningful content.
So the code can act as a code because it stands outside both sides of the equation. It is neither material, nor informational - as much as that is actually possible. And thus it can mediate between these two realms ... by in fact making them the two realms split by its epistemic cut.
There are four obvious levels where this happens. Biology has the encoding mechanism of the gene. Neurology uses neurons. Human culture uses words. And since the Enlightenment and Industrial Revolution, number has asserted its "world making" potential. Human psychology has been remade in a Noosphere fashion. Technology is new level of organism, feeding off buried carbon.
So a gene costs next to nothing, compared to the energy return on the investment. And a gene means nothing until there has been in fact some considerable spending of an organism's capital in terms of erasing alternative meanings - winnowing the host of free possibilities, or degenerate states, by an evolutionary filtering process.
So some codon on a DNA strand is essentially a cost-free and random choice. It is a switch that could be on or off. And it can just as easily be switched on or off. The bare coding mechanism is just a random bit string waiting to be given a meaningful state - some pattern that says something about the world, and thus about the self that has an evolved and informed point of view about that world.
This is why semiosis, or the modelling relation, is triadic. It has the three elements of the physics (the rate dependent dynamics), the model (the rate independent information), and the coding mechanism that both creates and bridges the sharp divide (the epistemic cut - best represented by the idea of a mechanical switch, or 0/1 logic gate).
Neurons are like genes in being essentially costless in terms of their physics. Humans can afford trillions of synaptic switches. And they are like genes in that each switch is essentially meaningless. The connections have no meaning until the pattern that is a functional regulatory model has been evolved, developed, learnt, habituated, remembered.
Neurons as simple uninformed switches are neither physical, nor mental. At least in the effective sense - the sense essential to their being a coding machinery, the implementation of the epistemic cut. Each neuron is by design as physically costless as a computer transistor. And it is by design as informationally meaningless as a computer transistor - until it has started to repay its small physical investment by doing useful work in the world as part of an informed regulatory model of that world.
The same applies to words and numbers. Each involve minimal physical effort to produce as symbols, so physics doesn't constrain their maximal informed use. And each lacks intrinsic meaning - they are just noises or squiggles. This means each can be endowed with any meaning we choose. And the amount of meaning they come to "contain" is proportionate to the number of alternative interpretations we have in fact - at some effort, some cost - discarded.
So there is one general trick that unites life and mind. Semiosis, or the way that a code can both separate and unite the two "realms" of mind and matter, information and entropy.
As the epistemic cut, the code first enforces a sharp distinction between the two, and then it re-connects them. The possibility of a model (a self) in causal control of a world comes by first breaking the physics of the world into its material and formal causes, then using a model of those formal causes (ideas about order and purpose) to re-connect the two sides in a (self)controlled fashion.
The code is a system of switches. To a reductionist and epiphenomenalist, one could say that that is all there is to see - a bunch of cheap transistors or some other rather costless bit of physical mechanism. And to an idealist or phenomenologists, there might instead be - well, still just be! - a bunch of cheap transistors, or some other rather costless bit of physical mechanism, that can thus have nothing meaningful to say about conscious experience, intentionality, feelings and aesthetics, or any of the other actually meaningful aspects of being a self, a mind, a free spirit, etc.
So what we have in philosophy of mind is realists and idealists locked in Cartesian conflict. And they are too absorbed in this historical cultural drama at pay attention to systems science or semiotics - the scientific account of how codes ground modelling relations.
Language is modeling of our conscious lives - our phenomenology - for others to bear witness to. Our language use is laced with phenomenological terms and projections of our phenomenology onto the world as if light is colored and ice cream is good and brains are physical outside of our own model. — Harry Hindu
Yes, I agree. And that is one of the big problems with the term "consciousness". Those who use it as their central descriptor are failing to recognise the big difference between neural level world modelling and linguistic level world modelling. They conflate a biological "first person" level of awareness with a sociological "third person" level of awareness.
And yet it is obvious that animals only "extrospect". They haven't got the semiotic means to introspect. They are plugged into the moment in all their responses - even if they are intentional, intelligent, capable of planning, etc.
But language gives humans the ability to take a displaced view of their reality. We can stand outside ourselves to see ourselves as selves. And we can stand outside the world - as it currently and concretely is - to imagine the world as it was at other times, or could be in other worlds, or even as it might be for other selves.