Comment by eszed
1 day ago
Yeah, I currently suspect that consciousness is an emergent property. I read elsewhere (it's somewhere in my HN history, I'm sure) that the biggest compute we can currently muster is something like three or four magnitudes away from the number of neurons / connections (or their analog) that our brains have, so it may be a while until we can expect to see it in our machines. But, if the emergent phenomenon hypothesis is correct, then we eventually will. I'm more scared than pleased by the prospect, but there you are.
>consciousness is an emergent property
You would really like Michael Pollan's latest book [1], entirely devoted to his exploration of consciousness researchers' POVs on this exact topic.
My favorite quote is that ~"perhaps Descartes was only half-wrong when suggesting I think, therefore I am; it seems rather closer to I FEEL, therefore I am."~
[1] <https://www.amazon.com/World-Appears-Journey-into-Consciousn...>
----
I've grown thousands of plants; I've read two of the author's other books devoted to plants; in this book Pollan makes compelling arguments for plant sentience (over a much-longer timeframe).
Sure, perhaps plant consciousness is a bit of a stretch, but they're certainly intelligent and curious creatures. He makes both arguments supporting plant volition.
----
If you haven't seen My Octopus Teacher (Netflix), do. I'm a bald 275lb bluecollarguy... and I wept/awed (both). So beautiful, we bundled neurons.
----
Bonus quote ~"color is where reality and magic appear as-if together"~ [color isn't real, but is perceived]. We most-often see what's most-predictable, not necessarily what we actually detected [in the case of color: nothing but nanometers].
Just to be sure: The "neurons" in today's AI have nothing to do whatsoever with real neurons.
What we can do is simulate very simple brains by simulating relatively few neurons as they appear in worms. In this sense we are multiple magnitudes away where the increasing complexity implies exponential increasing difficulty.
I would think we are so far away that there will be unknown unknowns we encounter on the way.
Yes, physically absolutely nothing. But conceptually they seem to to form this very generic function from inputs to outputs that neurons also form.
Only if you ignore almost every input and output that neurons have.
https://www.quantamagazine.org/ai-is-nothing-like-a-brain-an... https://pmc.ncbi.nlm.nih.gov/articles/PMC9665914/
This is why making more neuromorphic NNs is still an active area of research, although they typically all focus on another extremely simplified model (spiking neural networks).
3 replies →
Agree and add, don't confuse the substrate for the computation. Of course it's also clear that we don't quite have a full and definite picture of what the computation consists of in the case of a biological brain as evidenced by our continued failure to accurately simulate even the simplest of organisms.
> Just to be sure: The "neurons" in today's AI have nothing to do whatsoever with real neurons.
Yeah, but it's hard to explain this to people, especially AI-pro people. Too many are convinced that all we are doing is a cut-down version of the human brain, and it's hard to explain to them that, no actually, we aren't modeling the human brain to the level of granularity you think we are.
Personally I'm not a fan of the emergence story, for a number of reasons. First is, it doesn't really make sense for consciousness to have emerged gradually through natural selection. When we and animals are conscious, the whole brain is coordinated and works to for example turn off consciousness when we sleep. And as someone else mentioned, animals with much fewer numbers seem to have a similar consciousness to us.
If consciousness really evolved gradually, you would expect to see for example dogs or gorillas having less of it, but if they has less of it, why does it function the same way? Like for example animals can be scared, happy, anxious etc, they can experience the full range of emotions and thoughts, so their conscious experience seems just as rich as ours. What I mean by this is, if you can be "less conscious", then what does that mean _exactly_? Is it that you have less content in consciousness, or is it that you feel more like you are asleep? Or something else? We don't have any examples in animals of "less conscious", I would argue.
This makes me think that rather than having emerged gradually, evolution found a mechanism by which consciousness exists, and then some animals have that mechanism and others don't. I think that if it is a mechanism, then this mechanism is located in one part of the brain, not many parts functioning together (though one possibility is that this mechanism coordinates brain activity in such a way to enable consciousness).
I proposed in another comment that consciousness and self-awareness are at least close cousins, and perhaps the same phenomenon. If that's true, then that's an axis upon which you might create comparative measures. Yes, hamsters are conscious, but they don't have a sense of self to the same degree that gorillas do. If you posit capacity for language as another emergent property of sufficiently-complex networks, then you have another measure.
LLMs, then, are particularly unintuitive to us, because they've got to the language part first, long before they've reached even hamster-level self-awareness. They're not, however, biological networks, so there's no reason these properties need arise in the same order, or indeed in the same ways.
I'm not entirely convinced by that second paragraph, but I think the logic holds together.
I'm not sure consciousness and self-awareness are the same thing. First is we can be conscious when we sleep/during REM sleep, where it's arguable we are not self-aware. And if not that, we can even do it when awake, for example when we think about a movie, or a philosophical problem, we can have conscious thoughts that are not related to the self. This leads me to believe consciousness is separate from self-awareness. Self-awareness is _one thing_, among many, that the brain can think about and be conscious of.
3 replies →
Our machines won't have biological systems driving their needs which in turn fuel behaviors like desire and planning for the future. They may imitate them but it won't be innate.
For an LLM, "innate" means "in their training data". So yeah, those things are pretty much innate.
And also "instilled during their reinforcement training", and we are currently pushing planning hard there, for autonomous agents.
2 replies →
When we say "it rains", do we consider that "it" has any intention of agentivity?
Some questions are just ill formed.
Plus even if "LLMs are alive and conscious", this still would scratch the surface of the morale/ethical/societal considerations that people really care about.
Because even with other humans, we can argue if they exist or if they are mere npc in a solipsist world view.
2 replies →
I think those are things human consciousness has, not is.
Surely the number of neurons is not the whole story. Human brains have approximately 86 billion and are almost definitely conscious, but there are many other animals with a lot fewer (gorilla: 34 billion, dog: 2-3 billion, guinea pig: 240 million) which appear to be conscious also.
https://en.wikipedia.org/wiki/List_of_animals_by_number_of_n...
This is not meant as a gotcha, I am genuinely curious how you believe consciousness can be an emergent property. I assume you don't believe consciousness is a physical property in the brain, so what entity is actually experiencing that consciousness? Or, what does it even mean to experience consciousness? Or are these not even the right questions?
> This is not meant as a gotcha, I am genuinely curious how you believe consciousness can be an emergent property.
I was about to post the exact opposite question? How could it not be an emergent property? Unlike consciousness, the concept of emergence is pretty well defined: An emergent property is a characteristic or behavior that a complex system has, but which its individual components do not have on their own.
Consciousness itself doesn't have a well agreed upon definition, but I would posit that _most_ people would agree humans have it, and _most_ people would agree individual cells (neurons) do not have it. If you agree with those two statements, then consciousness is an emergent property by the definition I gave above
I think consciousness is going to turn out to be very challenging to define rigorously enough that we can test for its presence or absence. Emergent or not, the question is how do you determine when it has emerged? Is it a quantity or an attribute? Discrete or continuous? Does it have a finite or infinite range?
We can all agree on what color something is, but we can’t describe the color a priori, only by example. I think consciousness may be a similar phenomenon and the only test is by shared experience. If so then we are in deep trouble because we will not be able to anticipate when a system becomes conscious.
3 replies →
I think the alternative is that our brain, somehow, is connected to some metaphysical aspect of reality which is what most religions believe.
13 replies →
I don't know if most people would dismiss the sentence "all matter has a sort of proto-subjectivity very different from ours but which gives rise to ours". And it solves some problems (introducing others).
6 replies →
I'd expand a little bit to say inevitably emergent property. That is to say, if you create a sufficiently complex information-processing network, some level of consciousness will result. With regards to current AI, we're a fair way away from building something with enough connections, but we'll get there.
One thing that gives me pause about the inevitability hypothesis is that the type of connection, or manner of information processing, may matter: there might be something about neurons that isn't (currently) reproducible in silicon. I don't know, and there's not (yet) any evidence for or against, but it at least seems like plausible speculation. We just don't know enough about any of this right now.
2 replies →
Well, I think the "brain as an antenna" theory is also plausible given your preconditions.
But I think my issue with the emergence theory is that it seems to imply to me that consciousness is non-physical and non-local. So what entity is actually experiencing the consciousness? It's not that I believe consciousness is physical and local, but people who make the emergence argument seem to believe it is and I can't figure out how that is supposed to work.
2 replies →
Not a gotcha at all, but I don't have a satisfying answer, nor am I confident there even is one. Best I can do is to say that I think consciousness and sense of self are at the very least closely related, and perhaps the very same phenomenon. "I" am the entity that realizes my own consciousness; consciousness is the qualia that makes "me" separable from all other entities.
Or something like that. This gets to the "dorm room bullshitting" level right quick.
Yeah, I guess what I'm trying to ask is that if it is an emergent property but not a physical part of the brain, doesn't that imply something metaphysical about consciousness? Almost as if it's a non-physical phenomenon? At least when I hear people talk about emergent behaviour I see it as a refutation of the spiritual, but to me it seems like it actually implies we have a "soul".
Idk, it's really hard to articulate my thoughts here and yes it is pretty close to the conversations I had in college on various substances. Lol.
1 reply →
Is a video game a physical property of a computer?
We have general purpose hardware and we have hardware that's hard wired for specific purposes like ASICs and we have everything in between.
And we are only doing it for a few decades. Evolution had million of years of "try and error".
Yes
1 reply →
Those are the questions and there’s stacks and stacks of philosophy pages written about it. Go have a whirl.