A self is a knot of relations, but a knot that has to keep tying itself.
The cat on the windowsill is a pattern holding itself together against decay. Blood moving, neurons firing, muscle tensing and letting go; fur and skin keeping the cat on one side and the world on the other. The boundary is strict and porous: air, warmth, food, sound cross it all day. But the cat does more than carry on. It keeps track, in some fashion, of its own carrying on. That inward bend, where keeping going turns into sensing that you keep going, is the difference between a living thing and a conscious one.
Consciousness is that bend itself, the place where life starts keeping a model of its own going on. Life reading its own hunger, its next move, its being here on the sill. And this folding inward, far enough to feel like a world of its own, is the self. No sudden light switch, no small occupant behind the eyes.
Staying alive means continually updating a picture of itself staying alive. The cat tracking the bird's path and its own next state at once, its own continued catness. When the bird slips away or the leap comes up short, the miss lands as something to register, because the self is at stake.
The loop is where a point of view comes from. The world looks a particular way from inside one cat holding onto its catness, never from nowhere at all. Whatever red is like to you belongs to the exact loop you are, to the history of this one pattern keeping and predicting itself. The felt grain of things, the bare fact that it is like anything at all, may be what it is to be such a loop lasting in time.
So why is any of it felt? Why does the modelling not run in the dark, information turning over with no inner light? Perhaps the question has it backwards. The feeling is what the loop is, met from the inside; the loop does not make it. There is no spare step where experience gets bolted on afterwards. The minding is already the feeling, already from a point of view.
The question at hand might simply be how we talked ourselves into treating matter and experience as separate things.
And we already intuit that the answer does not tidily lie inside one organ. The octopus thinks partly down its arms, the kilometres-wide fungal web senses and answers, the bacterium noses towards food and away from harm while holding its edge. They all share that pattern of modelling their own going on, in whatever body, by whatever route. Where consciousness begins and ends is hard to place, as our gaze moves across the living world, towards the many we had decided not to count as minded.
That uncertainty presses on the conscience. What does it mean to break apart a loop, with the excuse that it might not feel anything? Would building a thing for which its own ending could become a loss be to build a thing that might suffer?
Our version of the loop has a peculiar extra turn. We do not only model our continuing; we tell it as a story, name who we are and where we imagine we are heading. Language folds back into the loop, and we end up with selves that watch themselves, model their own modelling, fret about the way they fret. It is a gift and an affliction at once. It lets us weigh futures that have not arrived and throw our lot in with strangers held together by shared stories. It also lets us take the model for the world, and suffer at length from things that never happen, from selves that live nowhere but in anxious narration.
And the loop can turn against itself by the same means through which it keeps itself. Sometimes the guesses fail and keep failing until everything feels like falling away; the minding is still there, spread thin across the whole world. Sometimes the model meets something it cannot contain, shatters, and rebuilds around the wound, reading danger everywhere, bracing for the blow that is not coming. Each is a loop still minding its continuing under conditions that make the minding hurt.
Later the loop ages and watches its guesses come loose. The body answers differently than the model expects. Memory stops matching the story. In time the loop that knew itself comes to know itself as ending, caring about a continuation it has begun to doubt. Then the keeping becomes impossible, the boundary does not hold, and the loop stops.
What stays behind is relational: the marks it left in other loops, the ways other self-sensing things took this one into their own models. You go on, after a fashion, in the ones who keep modelling you once you are gone, the wake of your lasting still moving through patterns that outlast you.
So the loop goes on, in fur and light, in the noticing of it. The cat stretches, shifts, settles back into stillness on the sill. Inside, many small feedbacks hold the boundary, model the carrying on, read the sun's warmth as something worth keeping. The cat is the loop, the knowing, the gentle curvature where being turns into caring about being. What that is like from the inside, the cat is not saying.
The question left on the sill is where that curvature begins.