Animal Consciousness
Figuring out whether animals have consciousness has implications for how we think about animal welfare, and also how we think about creativity
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With an account, you can revise, criticize, and comment on ideas, and submit new ideas.Unless we are solipsists, we conclude that all human beings are conscious.
A simple extrapolation to animals would be to say that those with similar characteristics to humans, could also have consciousness.
I am not aware of any strong theories on animals being unconscious, other than intuitions of some AGI researchers who conjecture that sentience hangs together with unique learning capabilities of humans.
And suppose that we have a reasonable (best available) current explanation for why animals are not conscious, I don't think that puts us in a Pascal's wager situation, because considering our own (recognised) fallibility, and the asymmetry of being right and wrong with respect to moral outcomes: enormous suffering versus inconvenience, we should consider to tread on the safe side until we have more evidence.
This implies that we should treat animals carefully, as their sentience allows them to feel pain, until we have a lot more information. Interestingly, this also implies that wild nature is evil and that we should seek to get rid of it (if we continue to believe in animal consciousness).
TL;DR: We only have vague conjectures on animal consciousness
A simple extrapolation to animals would be to say that those with similar characteristics to humans, could also have consciousness.
Sounds inductive.
A simple extrapolation to animals would be to say that those with similar characteristics to humans, could also have consciousness.
In addition to #371, this also sounds vague. Which “similar characteristics” and why?
[S]uppose that we have a reasonable (best available) current explanation for why animals are not conscious, I don't think that puts us in a Pascal's wager situation, because considering our own (recognised) fallibility, and the asymmetry of being right and wrong with respect to moral outcomes: enormous suffering versus inconvenience, we should consider to tread on the safe side until we have more evidence.
You say this wouldn’t put us in a Pascal’s wager situation, but then you employ more or less the same logic as Pascal: comparing a huge, potential downside with a certain, minor downside, and then choosing the minor downside.
I think it's different from Pascal's wager, as with Pascal's wager you have infinite, or many (all known religions) wagers. (Which god?) Whereas with animal consciousness we have only one wager, that we're currently not sure of, on which we're wagering a lot of potential animal suffering. Furthermore, we are not on our deathbed, and hence have the luxury of time to consider our trade.
I see that, according to Wikipedia, Pascal’s detractors criticized the wager for not addressing “the problem of which religion and which God should be worshipped”, but I don’t see how that is relevant here. Maybe there are some differences between how you apply the wager and how Pascal applied it, but the core logic is the same and equally invalid.
[W]e are not on our deathbed, and hence have the luxury of time to consider our trade.
But meat eaters contribute to the death of animals every day, so if animals were sentient there would be more urgency to apply the wager, not less. (I’ll preemptively add that, although meat eaters die every day, too, each one of them is complicit in what would be the murder of several innocent animals, so there’d still be more urgency.)
[C]onsidering our own (recognised) fallibility […] we should consider to tread on the safe side until we have more evidence.
There’s lots of evidence: https://blog.dennishackethal.com/posts/evidence-of-animal-insentience
And reasoning:
https://blog.dennishackethal.com/posts/konrad-lorenz-hacked-animals
https://blog.dennishackethal.com/posts/animal-sentience-discussion-tree
https://blog.dennishackethal.com/posts/animal-sentience-faq
https://blog.dennishackethal.com/posts/the-animal-rights-community-is-based-on-fear-a
As I write in the first link, the videos “mostly show bugs and nonsensical behavior, things that wouldn’t happen if animals were sentient.”
[W]ild nature is evil and […] we should seek to get rid of it (if we continue to believe in animal consciousness).
The suffering of some is not an obligation on others (Rand).
Not an obligation, but it would be a Morally Good Thing, whereas without sentience it would be pointless. (Or rather, a Morally Bad Thing, as this would be costly to sentient humans.)
Thanks for your contribution, Dirk.
Your post contains several ideas. In the future, you would benefit from submitting them separately so they have to be criticized separately. As it stands, a single criticism of your post will mark all of the ideas contained therein as problematic. I call this a ‘bulk criticism’, see #362.
To protect against bulk criticism, try to submit one idea per post. You can post multiple sibling ideas (not nested ideas) by using the form where it says “Add another top-level idea to the discussion” for each one.
Would you like to break your post up into several ideas before I offer criticism? They can still reference each other the same way I do above with idea #362 – if you type # followed by a number, it will turn into a link to the corresponding idea, much like GitHub does with issues.
The idea is: given that we know little about animal consciousness, it's better to err on the safe side given the asymmetry of inconvenience versus mass animal suffering.
I think you can attack this by either pointing out how that is a faulty way of thinking about a 'lack of evidence', or that there is indeed enough information on animal consciousness.
I'm mostly interested in finding evidence or thinking of cases that would be evidence, and less about the implications on morality.
I think you’ve replaced my question with a different one.
I asked whether you’d like to break your post up into several ideas to protect against bulk criticism.
You replaced the question with: ‘what is the core of your idea?’ And then you answered the replacement question instead of mine.
So your original post still stands (#364), and is still vulnerable to bulk criticism. I conclude that you are not concerned with bulk criticism and I will comment on the original post accordingly.
I have to admit I was unsure how many claims I actually made, and excused myself from the burden of having to figure it out with the following excuse: I expect that many potential users of your platform would make this error and therefore we should try to run with it. I also don't mind the bulk criticism.
I also don't mind the bulk criticism.
Even if the person submitting a post doesn’t mind bulk criticism, others still have a harder time discerning which ideas in the post are true/salvageable and which should be discarded. Meaning error correction is harder.
It helps when critics quote the part they’re criticizing, like I’m doing above, but the responsibility still lies with the original poster.
I agree many people would make the same error and that it’s a good idea to see how things play out when it does happen. There’s going to be a learning curve for new users. I will probably just point it out every time. I may even implement a feature where ‘AI’ analyzes text and helpfully points out to users that they’re about to submit multiple claims at once.
I don’t think animals are sentient.
I realize this view sounds outlandish to most but it’s a considered, researched conclusion.
There’s lots of evidence of insentience in the way animals behave. If they were sentient, they would not behave the way they do: https://blog.dennishackethal.com/posts/evidence-of-animal-insentience
Dozens of videos compiling and explaining evidence of animal insentience: https://libertythroughreason.com/insentience-in-animals-and-sleepwalkers/
Additional reasoning:
https://blog.dennishackethal.com/posts/animal-sentience-faq
https://blog.dennishackethal.com/posts/konrad-lorenz-hacked-animals
https://blog.dennishackethal.com/posts/animal-sentience-discussion-tree
https://blog.dennishackethal.com/posts/the-animal-rights-community-is-based-on-fear-a
You propose in your writings that universal creativity can emerge from lower-level, mindless computation, and that consciousness is among the emergent properties associated with creativity. But why must phenomenal experience emerge only together with universal creativity?
The fact that simple execution-only systems are not conscious does not show that no noncreative computation can have phenomenal properties. For example, pain could in principle have emerged from a different kind of lower-level computation long before that system acquired universal creativity.
So unless there is an explanation for why phenomenal experience cannot emerge from noncreative computation, the inference from “animals are noncreative” to “animals are insentient” does not seem to follow.
The inference would seem more natural in the opposite direction: evidence that animals lacked phenomenal experience might support doubts about more general mental capacities, but the absence of universal creativity does not by itself explain why even pain or color experience should be absent.
Hi Vincent, welcome to V. Nice meeting you at Conjecture Con.
But why must phenomenal experience emerge only together with universal creativity?
Idk why you switched from “consciousness” to “phenomenal experience” here. But the argument is that behavior that may just as well be preprogrammed and then executed mindlessly is not evidence of consciousness (because it is, again, mindless).
I have seen no evidence of any animal behavior that could not have been preprogrammed. If you know of any, please show me.
But the argument is that behavior that may just as well be preprogrammed and then executed mindlessly is not evidence of consciousness (because it is, again, mindless).
This seems to be circular reasoning:
Your reply seems to move from “the behavior could have been preprogrammed” to “the behavior is therefore mindless.” But those are different claims.
“Preprogrammed” describes how the behavior is generated. “Mindless” additionally says that no phenomenal experience accompanies that process. That does not follow unless we already assume that non-universal or preprogrammed computation cannot support phenomenal experience. Which is precisely the connection my criticism questioned.
So showing that animal behavior could be preprogrammed may show that the behavior does not prove sentience, but it does not by itself provide evidence of insentience.
Explanations of animal behavior can be phrased fully in terms of unconscious, purely dogmatic information processing. We can write the programs and simulate animals on a computer. We don’t need consciousness for any of it. But we can’t write the program that would simulate a person on a computer. That program would result in consciousness. There’s an asymmetry there.
Can I prove that dogmatic programs don’t give rise to consciousness? No. But I think that’s the wrong epistemological standard. I can’t prove that rocks aren’t conscious either. What I do know is that I don’t invoke the concept of consciousness when explaining rocks (whatever little there is to explain about them).
I understand “we can write the programs and simulate animals” to mean that we can write an underlying program capable of generating an animal’s full behavioral and cognitive repertoire across novel circumstances. If you only mean that we can reproduce particular behaviors, then I don’t see the asymmetry, since we can reproduce particular human behaviors computationally too.
But I think we should be careful with the stronger claim. As far as I know, we cannot currently write such a complete generative program for animals such as crows or apes either. Indeed, even for vastly simpler animals such as the fruit fly or C. elegans, despite having mapped its complete connectome, our executable models still reproduce only parts of its behavior rather than the organism’s full repertoire.
Suppose we eventually can write complete generative programs for both a crow and a human. You say that the human program “would result in consciousness.”
I agree that this follows from your theory if universal creativity entails consciousness. But then I don’t think it can also serve as an independent argument for that connection. The possibility of a universally creative philosophical zombie is ruled out by your theory, rather than independently by the fact that the program is universally creative.
Likewise, your theory predicts that the crow program would be unconscious if it remains non-universal. Competing theories of consciousness could make different predictions about the same two programs. For example, IIT explicitly allows functionally equivalent systems to differ in consciousness depending on their intrinsic causal organization. I’m not assuming IIT is correct. It just illustrates that knowing what the two programs can do would not by itself decide which theory of consciousness is correct.
So I think the simulation comparison inherits the disagreement about which theory of consciousness is correct; it does not by itself resolve the link between universal creativity and phenomenal experience.
I have seen no evidence of any animal behavior that could not have been preprogrammed. If you know of any, please show me. <
You ask for animal behavior that could not have been preprogrammed. But I’m not sure any finite observed behavior could meet that standard.
For any finite sequence of behavior, it seems possible in principle to posit a sufficiently elaborate fixed program that produces it. The same would apply to human behavior.
So if the criterion for sentience is behavior that could not possibly have been preprogrammed, it is unclear how sentience could ever be established behaviorally, including in humans.
For any finite sequence of behavior, it seems possible in principle to posit a sufficiently elaborate fixed program that produces it. The same would apply to human behavior.
I disagree. Human behavior is so far off the mark I can’t explain it in terms of preprogramming only. I don’t know how to explain poems and rocket ships. Biological evolution had no reason to create any of the knowledge needed to make rocket ships, so preprogramming doesn’t make sense as an explanation.
If monkeys suddenly started making rocket ships one day, I would have trouble explaining that, for the same reason.
Ultimately the criterion will depend on an explanation of how the underlying program works. There can’t be a purely behavioral criterion, as DD argues in BoI ch. 7 (IIRC). But until we have that, some behavior is so blatantly robotic, like a Roomba, that I think we can reasonably conclude it has nothing to do with consciousness.
I agree that behavior which is blatantly robotic can be evidence that the behavior itself does not involve universal creativity, questioning or error correction. But I don't see how that gets us to the stronger conclusion that it “has nothing to do with consciousness.”
A system could execute a rigid, preprogrammed behavior while still having phenomenal experiences such as seeing color or feeling pain. The robotic character of the behavior seems relevant to whether the system is exercising universal creativity, but not by itself to whether anything is being experienced.
To infer insentience from the robotic behavior, we would still need the separate premise that phenomenal experience cannot accompany non-universal information processing, which is the point under dispute.
In the reasoning you link in support of animal insentience, you argue that sentience and the capacity for universal creativity/critical thought come as a package deal. Dreaming seems to provide evidence against that connection.
Ordinary dreams can involve vivid visual experience, fear, pleasure, pain, etc., while metacognition, reality testing and critical reflection are greatly diminished. Lucid dreaming makes the distinction especially interesting: metacognitive awareness can return during an already conscious dream. The dream does not become phenomenally conscious only when lucidity begins; rather, an additional capacity for recognizing and critically reflecting on the experience appears.
This suggests that phenomenal experience can occur independently of the active critical capacities you take animals to lack.
This suggests that phenomenal experience can occur independently of the active critical capacities you take animals to lack.
I don’t think so, since, as you write yourself, the critical attitude while dreaming is only “diminished”, not completely gone.
If vivid phenomenal experience persists while the relevant critical capacities are greatly diminished (and some forms of meta-awareness appear to be absent altogether in ordinary dreams) that seems at least evidence that phenomenal experience does not closely depend on the degree to which those capacities are active. Lucid dreaming strengthens this: reflective/metacognitive capacities can return within an experience that was already phenomenal.
We have different degrees of awareness during different dreams, I agree. But we’re aware of them. With higher critical ability, we plausibly get lucid dreaming – lower instead means passive observation.
It’s like watching a movie. I have no control over what happens in the movie, still I’m consciously aware of it. I could instead play a video game, where I do have some control over what happens, and which arguably requires more of a critical attitude. I don’t see how this refutes my stance.
I think “awareness” is doing two different jobs here. Of course we are consciously experiencing an ordinary dream (seeing, feeling, fearing, etc.). That is a premise of my criticism.
What is characteristically absent in a non-lucid dream is awareness that one is dreaming, together with much of the associated reality monitoring and critical reflection. Becoming aware that one is dreaming is precisely what distinguishes lucid dreaming.
So saying “we’re aware of them” does not seem to address the distinction I was making between phenomenal experience and reflective/metacognitive awareness.
I don’t think the movie/video-game analogy captures what I find interesting about dreaming here, because it seems to put phenomenal awareness, meta-awareness and control on a single scale of “critical ability”.
These capacities can dissociate: In an ordinary non-lucid dream there can already be vivid phenomenal experience without awareness that one is dreaming. Lucidity adds that meta-awareness, but does not necessarily add control (lucid dreams can themselves occur with or without substantial control over what happens).
So rather than a simple progression from passive/uncritical to active/critical, dreaming seems to give us different combinations of phenomenal experience, meta-awareness and control.
That is precisely why I think it provides some evidence that phenomenal experience is not tightly bound to the other capacities.
I usually find that terms like “phenomenal experience” and “cognition” are confusing and make discussions harder. Ultimately, there’s one type of consciousness and one type of information processing that gives rise to it. I don’t think distinctions between different types of ‘cognition’ or ‘experience’ are worth drawing, if they even exist in reality at all.
By “phenomenal experience” I simply mean there being something it is like to see red, feel pain, fear, etc. Your claim that animals are insentient is itself a claim that these experiences are absent.
Whether such experience can occur without universal/critical cognition is precisely what is under dispute. So saying that these distinctions may not exist, because ultimately there is one kind of information processing that gives rise to consciousness, seems to assume the package-deal hypothesis rather than provide an argument for it.
If there is an independent reason why phenomenal experience cannot occur without universal creativity, that would address the criticism. But I don’t think collapsing the distinction itself does.
In the reasoning you link in support of animal insentience, you argue that similarities between human and animal nervous systems do not tell us whether the same conscious “software” is running. But humans and other mammals are not analogous to two identical computers on which entirely unrelated programs happen to have been installed. The relevant systems have a shared evolutionary history, with substantial continuity in sensory, affective, nociceptive and learning mechanisms.
A change in that inherited system may indeed have produced the qualitative leap to universal creativity. Since universality is necessarily all-or-nothing in the relevant sense, that leap is unsurprising. But it does not follow that every other aspect of mental life (including pain or other phenomenal experience) must have appeared in the same leap, or even require a comparable leap at all.
Neural continuity therefore seems evidentially relevant even if it cannot by itself prove sentience. The observation that universal creativity is uniquely human still leaves open whether older, shared systems already supported phenomenal experience.
The relevant systems have a shared evolutionary history…
So do laptops and their hardware, only with memetic evolutionary history. So what?
I agree that shared evolutionary history by itself would not establish that the same “software” is running. But that wasn’t my claim.
My point is that humans inherited from earlier animals many of the same organized systems involved in things like sensory processing, nociception, affect and learning. The emergence of universal creativity could have changed the overall cognitive architecture dramatically without implying that all of those older systems acquired their phenomenal properties only at that same point.
So the laptop analogy shows that common ancestry does not entail identical software, which I agree with. What I don’t think it shows is that the continuity of these particular inherited systems is evidentially irrelevant to whether phenomenal experience may already have been present before universality.
A change in that inherited system may indeed have produced the qualitative leap to universal creativity. Since universality is necessarily all-or-nothing in the relevant sense, that leap is unsurprising. But it does not follow that every other aspect of mental life (including pain or other phenomenal experience) must have appeared in the same leap, or even require a comparable leap at all.
It’s a guess. No other explanation is known. If you have a different guess, propose it here.
Yes, it’s a guess. So the leap to universal creativity does not itself imply that phenomenal experience appeared in the same leap.
I proposed an alternative possibility (#5739): older, shared systems may already have supported phenomenal experience before universal creativity emerged. I’m not claiming that this alternative is established either.
I’m not sure “no other explanation is known” is quite right. For example, IIT offers a very different theory under which consciousness depends on a system’s intrinsic causal organization. My conjecture that phenomenal experience could predate universal creativity is at least compatible with that kind of account.
So it seems to me that we currently have competing conjectures here, rather than one known explanation and no alternative.
Neural continuity therefore seems evidentially relevant even if it cannot by itself prove sentience.
No, the substrate independence of computation rules that out. Neurons don’t matter for our purposes here, at all.
I agree of course that consciousness, if computational, need not depend on neurons as a particular material substrate. But that is different from saying that the organization and activity implemented by those neurons tell us nothing.
The article you link makes this distinction itself: substrate independence means that most details of the substrate do not matter; what matters is the relevant pattern or structure of information processing. Studying homologous neural systems can give us evidence about exactly that organization and processing.
So my claim is not “they have similar neurons, therefore they have similar experiences.” It is that there is evolutionary continuity not only in the neural substrate, but also in how systems involved in sensory, nociceptive and affective processing are organized, what signals they process, and how they interact with other systems.
That seems evidentially relevant to what information processing is occurring. Substrate independence does not make that evidence irrelevant.
The relevant systems have a shared evolutionary history, with substantial continuity in sensory, affective, nociceptive and learning mechanisms.
Unnecessarily complex language like this makes ideas harder to criticize. Just write ‘they sense things, feel pain, and change behavior.’
I initially wondered whether you were right that I could simplify this, but I think the distinction is necessary here. Writing “they … feel pain” would already assume part of the conclusion under dispute: that animal nociceptive processing is accompanied by phenomenal pain.
By “sensory, affective, nociceptive and learning mechanisms” I was trying to refer to processes we can identify without assuming that they involve conscious experience. The wording is less simple, but in this case I think the precision actually matters.
I also wonder whether your note here should be a criticism rather than a comment. As I understand Veritula, an outstanding criticism makes the parent idea problematic and therefore not rationally adoptable, whereas comments are neutral.
A suggestion that an idea could be phrased more simply seems like a useful comment, but unless the wording actually makes the content of the claim ambiguous or substantively defective, I don’t see why it should count as a reason to reject the idea itself.
The relevant systems have a shared evolutionary history, with substantial continuity in sensory, affective, nociceptive and learning mechanisms.
That isn’t learning in the relevant sense that has to do with consciousness. DD explains some of that here.
I agree that this is not “learning” in the special Deutschian sense of universal knowledge creation. I was using “learning” in the ordinary biological sense of experience-dependent changes in processing and behavior.
In fact, the passage you link makes that distinction explicitly: Deutsch allows that the robot’s useful change can be called learning, while denying that it constitutes genuine creation of new knowledge.
That distinction is actually part of my point. I’m not claiming continuity in universal creativity between humans and other animals. I’m pointing to continuity in the older, non-universal capacities (such as sensory, nociceptive, affective and ordinary learning processes). Whether those processes can support phenomenal experience is precisely what is under discussion.
The evidential standard seems asymmetric.
You have said that there ultimately cannot be a purely behavioral criterion for consciousness, because what matters is an explanation of the underlying program (#5693). But at the same time, apparently rigid or “blatantly robotic” behavior is allowed to count as evidence against consciousness.
In the other direction, apparently flexible, sophisticated or sentient-like animal behavior does not seem able to count correspondingly in favor of consciousness, because it could always in principle have been produced by a nonconscious program.
If behavior alone cannot establish sentience because we need to understand the underlying processing, I don’t see why apparently robotic behavior should by itself count more readily toward insentience. Unless there is already an independent reason to think phenomenal experience requires universal creativity, the evidential standard seems to favor insentience in advance.
