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  • On theories of sentience: a talk with Magnus Vinding

    Magnus Vinding is a philosopher focused on reducing suffering. In his works, he has covered topics such as effective altruism, anti-speciesism, suffering-focused ethics (about which he was writing a book at the time of this interview), and issues of personal identity and ontology, such as open individualism and physicalism. He has a degree in mathematics and is the author of the books: Why We Should Go Vegan, Why “Happy Meat” Is Always Wrong, Speciesism: Why It Is Wrong and the Implications of Rejecting It, Reflections on Intelligence, You Are Them, and Effective Altruism: How Can We Best Help Others?

    [Puedes leer esta entrevista en español aquí]

    Manu Herrán: Let’s start with the very beginning. I’ll use the word sentience for experiences of suffering and enjoyment, and consciousness for subjective experiences in general. Not only pain and pleasure but, for instance, to perceive. Does it match your terminology?

    Magnus Vinding: Yes.

    Manu Herrán: Some researchers consider that in general non human animals have a lack of consciousness. Does it implies that they deserve less (or even none) moral consideration?

    Magnus Vinding: “Consciousness” is sometimes understood as “self-knowledge”, which one may seek to operationalize and measure in various ways, yet one obvious way is to ask whether an individual is able to pass the mirror test. Many non-human animals are evidently conscious in this sense. But beyond that, it’s certainly possible for, let’s say, an invertebrate or a developing human child to feel pain without a very clear idea of what’s happening, without having any self-model. But that doesn’t diminish the moral relevance of the suffering itself, if it exists. Sentience, I submit, is ultimately what matters, or at any rate what matters most.

    Manu Herrán: Sentience is the only thing that matters?

    Magnus Vinding: Philosophers disagree about this. Though it seems most do agree that, to the extent anything matters, sentience is at least among what matters.

    Manu Herrán: Other people consider beauty, complexity or life. Or knowledge.

    Magnus Vinding: One can argue that knowledge, especially if construed broadly such that it includes epistemic values, has a special status. If we zoom out a bit, we may think in terms of epistemic values on the one hand (e.g. consistency, parsimony, “seeming reasonable/plausible”, etc.) and moral values on the other (e.g. reducing suffering, living kindly, never lying, etc.).

    The relationship between these two classes of values is interesting, I think. For example, we must depend on certain epistemic values to reach any set of moral values, yet we may then in turn decide, based on our moral values, to change certain epistemic values we initially held, such as if we think excess curiosity and exploration might cause more suffering in the future. And this might have a cost of closing off certain knowledge that might actually change our moral values further. The question of how to best balance such values against each other is a deep one; after all, which values should one rest on here? This is deep philosophy.

    In relation to the notion that beauty, complexity or life are good (or bad for that matter), my own view is that they only have instrumental value. That is, they are good or bad to the extent there is someone whose experience is impacted positively of negatively by them.

    The same can be said about knowledge, if we disregard the more fundamental issue mentioned above: on my view of ethics, knowledge is good to the extent it can help us avoid extreme suffering (which is not to say we should necessarily think about knowledge in such instrumental terms; that may not be useful in most cases).

    Manu Herrán: You are in contact with the main researchers and organizations that aim to reduce suffering. Would you say that you share a common understanding of sentience, what it is, and where it comes from?

    Magnus Vinding: In some aspects yes, but not in others. It would take a very long time to explain it all properly, but the main distinction is that between realists and non-realists about consciousness.

    Non-realists, or eliminativists, hold that consciousness does not really exist. This view has been defended by Brian Tomasik, and it seems to have inspired many people concerned about reducing suffering (Brian has in turn been inspired by Daniel Dennett and Eliezer Yudkowsky).

    Eliminativism is also the view Sentience Institute tentatively subscribes to, though I say tentatively because Sentience Institute does not seem to actually hold that consciousness does not exist — e.g. Jacy Reese writes: “I am fully on board with, ‘I think, therefore I am,’ and the notion that you can have 100% confidence in your own first-person experience.” The sense in which Jacy denies the existence of consciousness is thus, as far as I can tell, more in the sense that consciousness is not a crisp category, just as, say, “music” is not a crisp, well-demarcated category. Yet this, I would argue, is not to deny the existence of consciousness in any substantive sense; after all, most realists would agree with the claim that consciousness — in the sense of a complex composite mind — is not a clearly delineated category.

    I have tried, elsewhere, to draw an analogy to sound and music: just because “music” is a fuzzy category, and we may not be able to give a clear answer to whether a collection of sounds counts as music or not, this does not mean there are no truths about the nature of this collection of sounds (their volume, pitch, character, etc.). The same, I would argue, can be applied to consciousness: just because we may not be able to agree on what counts as a composite mind (which is often what the term “consciousness” connotes) does not mean there are no truths about the phenomenal state of a given mind-brain (in terms of intensity, its content, its character, etc.).

    In contrast to the non-realists, you have explicit realists about consciousness. One of these is David Pearce, who views “consciousness” and “the physical” as one and the same phenomenon under different descriptions (I have tried to give a simple explanation of his view here). Pearce has put forth a daring hypothesis about consciousness in concrete physical terms which one can find here.

    Other realists include Mike Johnson and Andrés Gómez Emilsson who have co-founded the Qualia Research Institute in order to explore the physical signatures of consciousness from a somewhat more agnostic position than Pearce’s (in terms of what the physical signatures might ultimately be).

    Beyond that, there is a distinction to be drawn between functionalist and non-functionalist (or one may perhaps call them “concretist”) accounts of consciousness. Brian Tomasik is a functionalist, whereas someone like Mike Johnson is not — he used to be, yet he changed his mind and has written the following, in my mind, rather strong critique of functionalism. Pearce sometimes calls himself a “micro-functionalist”, meaning that if a mind-brain is reproduced down to the level of the finest “micro-physical” detail, in a concrete rather than an abstract sense, then it will have the same phenomenal properties as the original. But not otherwise, and hence he is not a functionalist in the traditional sense.

    These views, in turn, have very different implications for what suffering is in particular and what we can do about it. For instance, David Pearce views suffering as a concrete phenomenon we will likely come to understand in great detail and ultimately phase out, whereas Brian Tomasik does not see suffering as something that can be crisply understood or phased out; on his view, suffering is, at least in one sense, more inherent to reality.

    Manu Herrán: This is a very important difference, with very significant implications in the allocation of resources in a possible project to reduce suffering. Isn’t it? I’m thinking, for example, on the project of The Hedonistic Imperative.

    Magnus Vinding: Yes, though exploring the full extent of the differences is beyond the scope of this conversation. It is also worth pointing out, however, that there are significant points of convergence, including that the boundaries we draw in relation to which beings can suffer are quite fuzzy from our current vantage point. Though from a realist perspective, they are fuzzy due to our ignorance, whereas they are fuzzy more or less by definition on the non-realist view. Thus, realism arguably implies more research on this question than does non-realism (which is not to say that one will necessarily ever find certain answers given realism).

    Beyond that, it is worth noting that, regardless of their views of consciousness, people in Effective Altruism who try to reduce suffering pretty much all agree that we should seek to explore future risks with an open mind; that we should seek to engage with other people in friendly, cooperative ways; that we should expand the moral circle; that we should promote compassion and wise consequentialist thinking, etc.

    Manu Herrán: How can Brian reconcile eliminativism and functionalism? I mean, if I understand correctly, Brian believes in eliminativism and functionalism at the same time.

    Magnus Vinding: You would have to ask him, I guess. But I suspect he would say eliminativism is true objectively whereas (his) functionalism is the way he chooses, subjectively, to define consciousness and sentience.

    Manu Herrán: Do you think that Brian and David have each just a single strong belief about their own (different) understandings on sentience, or do they honestly recognize that other theories may be true as well?

    Magnus Vinding: I know David struggles to understand Brian’s view, i.e. to understand what it even means. Brian, to my knowledge, mostly retains some uncertainty for Aumann reasons. But speaking more generally, I think both of them tend to acknowledge that we may well all be very wrong about the nature of reality, and that our human concepts may ultimately do a poor job of capturing what is really going on.

    Manu Herrán: Which is your preferred view or views on consciousness? I mean, in the sense of “more probable hypothesis”.

    Magnus Vinding: My view is physicalist and not functionalist in the macro sense, but only in the micro/”concretist” sense. In general, I think David Pearce is right that, as Mike Johnson sums up David’s view: “consciousness is ‘ontologically unitary’, and so only a physical property that implies ontological unity (such as quantum coherence) could physically instantiate consciousness.” (Principia Qualia, p. 73).

    That is, I lean toward the view that my present conscious mind is an actual, unitary physical “thing”. After all, if experience is not physically unitary in this way, if it can emerge from something physically disconnected by a small distance, then why should it not be able to emerge from something separated by a large distance? Why should the physical state that mediates one particular aspect of my experience — say, sights — not be situated in another country, or indeed on another planet, from the physical states that mediate other aspects, such as sounds and emotions? (I draw a similar analogy to computers made of billard balls here). There must, I think, be some connection and integration in physical terms, and I suspect most people’s intuitions would agree.

    And the relevant question is then in which systems such connection/integration obtains. Could it, for instance, ever obtain in systems such as present-day computers? I doubt it, and I think too many in our circles treat a positive answer to this question as a foregone conclusion, and consider doubts about it tantamount to supernaturalism and anthropocentrism. I just think this is wrong. Computers have not been designed to bring together a lot of sensory-information from their environments to act on for their survival, moment-to-moment. Biological brains have. This is a pretty significant difference. And saying that two highly abstract models of two different physical systems are in some sense isomorphic (say, some abstract model of a PC and of a brain respectively) in no way implies that every relevant property these physical systems have will be shared.

    Manu Herrán: Is your physicalist view the same as David Pearce’s?

    Magnus Vinding: In some ways. Yet as far as I can tell, I am much more agnostic about the nature of consciousness in physical terms. But at the level of the basics, I follow Pearce, and have indeed been greatly inspired by him. That is, like Pearce, I hold a monist view according to which there is just one world conforming to different descriptions.

    This view may seem counter-intuitive, yet I think the analogy I drew above in relation to sound in general and music in particular can actually help dissolve some of our confusion and render it more intuitive. The problem is that we have this one word, consciousness, which covers far too much. Some vocabular refinement is called for (see the previous link for elaboration).

    Another point of confusion is that we conflate epistemology and ontology — in a sense, we confuse our physical models of reality for reality itself, and we fail to realize when we speak about epistemological reduction versus ontological reduction, something I say more about in a recent post called Physics Is Also Qualia.

    Manu Herrán: All the different theories sound complex, but your explanations are clarifying them a lot. Can we summarize that Brian, David and you have different views about sentience?

    Magnus Vinding: Yes, that is quite safe to say. Although the difference between David and myself is not so large; we are close to each other relative to Brian (although, in some ways, Brian is also close, such as when he describes his view as a panpsychist view). The main difference between David’s view and my own is, as mentioned, that I am more agnostic concerning the physical “details”. Also, unlike David, I don’t think I have really said anything original; the things I have written about consciousness mostly clarify and defend aspects of David’s view.

    Manu Herrán: Do you think we will be able to defeat suffering?

    Magnus Vinding: I will give a functional answer that is useful for moral agents: I think moral agents aiming to reduce suffering should always spend a large fraction of their resources exploring how they can best reduce suffering in expectation, and this would be true even if suffering had been abolished.

    Also, whether suffering can be abolished ultimately depends on one’s view of the nature of time and the universe at large, so it is not easy to give a straightforward answer.

    Beyond that, I would also say that focusing on defeating suffering as one’s goal may actually be harmful. It is better, I think, to focus on reducing the most suffering in expectation (within the bounds of reasonable side-constraints), which in the best case will entail the “defeat of suffering” anyway.

    Manu Herrán: Thanks Magnus. It has been a pleasure to have this talk.

    Magnus Vinding: I can say the same thing. Good luck with your projects.

     

  • In every country people think that others are less happy than they themselves say

    In every country people think that others are less happy than they themselves say.

    In every single country, the average estimate of happiness is far lower than actual reported happiness. Every single country!… Read more

  • Against Wishful Thinking by Brian Tomasik

    Some people hold more hopeful beliefs about the world and the future than are justified. These include the feeling that life for wild animals isn’t so bad and the expectation that humanity’s future will reduce more suffering than it creates. By feeding these dreams, optimistic visions of suffering reduction, while noble, may in fact cause net harm. We should explore ways of increasing empathy that also expose the true extent of suffering in the world, e.g., information about factory farming, brutality in nature, and unfathomable amounts of suffering that may result from space colonization.

    Read more

  • Robots need civil rights, too

    If “consciousness” is a similarly broad concept, then we can see degrees of consciousness in a variety of biological and artificial agents, depending on what kinds of abilities they possess and how complex they are. For example, a thermostat might be said to have an extremely tiny degree of consciousness insofar as it’s “aware” of the room temperature and “takes actions” to achieve its “goal” of not letting the room get too hot or too cold. I use scare quotes here because words like “aware” and “goal” normally have implied anthropomorphic baggage that’s almost entirely absent in the thermostat case. The thermostat is astronomically simpler than a human, and any attributions of consciousness to it should be seen as astronomically weaker than attributions of consciousness to a human.

    Source: https://reducing-suffering.org/machine-sentience-and-robot-rights/

    Suffering is what concerns Brian Tomasik, a former software engineer who worked on machine learning before helping to start the Foundational Research Institute, whose goal is to reduce suffering in the world. Tomasik raises the possibility that AIs might be suffering because, as he put it in an e-mail, “some artificially intelligent agents learn how to act through simplified digital versions of ‘rewards’ and ‘punishments.’” This system, called reinforcement learning, offers algorithms an abstract “reward” when they make a correct observation [actually, “observation” should be changed to “action”]. It’s designed to emulate the reward system in animal brains, and could potentially lead to a scenario where a machine comes to life and suffers because it doesn’t get enough rewards. Its programmers would likely never realize the hurt they were causing.

    Source: https://www.bostonglobe.com/ideas/2017/09/08/robots-need-civil-rights-too/igtQCcXhB96009et5C6tXP/story.html

     

  • What is the problem of consciousness?

    The problem of consciousness can be formulated as follows: how is it that, from a purely material basis (a brain or a centralized nervous system), consciousness emerges? This is what the problem of consciousness really boils down to. Answering this requires answering the question, what structures must be present in an organism and how would they function for consciousness to be possible? In other words, of all the different ways that the bodies of animals are arranged, which ones contain structures and arrangements that give rise to consciousness? There is no reason to suppose that only a human-like central nervous system will give rise to consciousness, and a great deal of evidence that very different types of animals are conscious. An example is bird brains, which have many structural similarities to mammalian brains, but different arrangements of neurons. Yet their brain circuits seem to be wired in a different way that creates a similar effect in terms of consciousness and cognition. An octopus is an invertebrate with a very different type of nervous system. But an octopus exhibits behavior and responds to her environment like a conscious being.

    Read more

  • Plants live in a tactile world, perceive light, have a sense of smell, taste, and respond to sound

    Are plants sentient? We know they sense their environments to a significant degree; like animals, they can “see” light, as a New Scientist feature explains. They “live in a very tactile world,” have a sense of smell, respond to sound, and use taste to “sense danger and drought and even to recognize relatives.” We’ve previously highlighted research here on how trees talk to each other with chemical signals and form social bonds and families. The idea sets the imagination running and might even cause a little paranoia. What are they saying? Are they talking about us?

    Maybe we deserve to feel a little uneasy around plant life, given how ruthlessly our consumer economies exploit the natural world. Now imagine we could hear the sounds plants make when they’re stressed out. In addition to releasing volatile chemicals and showing “altered phenotypes, including changes in color, smell, and shape,” write the authors of a new study published at bioRxiv, it’s possible that plants “emit airborne sounds [their emphasis] when stressed—similarly to many animals.”

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  • The big lie

    People wonder about the cause of poverty when scarcity is the natural state of things. Why is scarcity the natural state of things? Because we are “designed” (metaphorically) to survive and reproduce our genes as much as possible. Not to discover reality. Not to enjoy. This is why evolution has selected in us the fear of death and the belief that life is always worth living. We are “programmed” to make our life as long as possible, at any cost. Evolution has designed us (metaphorically) to believe that life is worth living and is more important than avoiding suffering. We are ‘designed’ to survive, not to enjoy.

    Read more

     

  • Discussion on the concept of sentience

    drugmonkey said:

    You may have noticed a rash of posts around the ScienceBlogs decrying the ARA terrorist extremists who have vowed, again, to target the children of a UCLA neuroscientist. Dario Ringach famously gave up his nonhuman primate research in 2006 because of threats against his family. His participation in last week’s dialog held at the UCLA campus apparently induced the extremist attention seekers, angry at having the momentum and PR shift to their slightly more rational co-travelers, to renew their threats. This is utterly despicable. Utterly.

    This would be a great time for people who purport to be non-extremist animal rights advocates or sympathizers to do some deep soul searching. Soul searching that does not just easily write off the terrorists as a crazy fringe but asks penetrating questions about the nature of their own beliefs.

    I cannot help you with this difficult work but I noticed something a little odd and new to me popping up in comment threads following the posts linked above. It has to do with the concept of sentience.

    Wandering over to the Wikipedia entry I find a rather interesting set of observations.

    Sentience is the ability to feel or perceive subjectively. The term is used in philosophy (particularly in the philosophy of animal ethics and in eastern philosophy) as well as in science fiction and (occasionally) in the study of artificial intelligence. In each of these fields the term is used slightly differently.

    In eastern philosophy, sentience is a metaphysical quality of all things that requires our respect and care. In science fiction, sentience is “personhood”: the essential quality that separates humankind from machines or animals. Sentience is used in the study of consciousness to describe the ability to have sensations or experiences, known to some Western academic philosophers as “qualia”.

    Some advocates of animal rights argue that many animals are sentient in that they can feel pleasure and pain, and that this entails being entitled to some moral or legal rights.

    Well this certainly explains my confusion. To me, “sentience” has always been the science fiction concept. I suspect quite strongly that for most people, this is the connotation of the term.

    Interesting, is it not, that animal rights people would co-opt this term to mean “can feel pleasure or pain”? Why create this new use for the term, particularly when it has such strong associations with the full-human capacity, different from animals and machines science-fiction type of definition?

    Just another dishonest ploy to sway people to their way of thinking on something other than the merits. Of course they know what they are doing. Of course they know that they are creating this blurring of definitions in the minds of the undecided public. And of course they are hoping to lure everyone into using their terminology so that when people who are in favor of animal research say, well of course animals can feel pain, the ARA nut can claim that such people are admitting to sentience.

    When of course they are doing no such thing.

    Challenge anyone who uses this “sentience” gambit, eh? Get them to specify exactly what they mean. And ask what they are trying to pull with this redefinition nonsense.

    Read more

  • Consciousness and self-consciousness

    Consciousness is being aware. Self-consciousness is being aware of oneself. Being conscious, rather than self-conscious, is the key concept in ethics.

    Consciousness can be defined as the state of having experiences. Conscious states, or mental states, are situations in which one is having any kind of experience, be it a sensorial experience, a thought, an emotion or whatever.

    Self-consciousness, a particular form of consciousness, is a broad term that is used to mean different forms of awareness regarding oneself and one’s experiences. The way we understand the concept of the self depends on which meaning of self-consciousness we use.

    Read more

  • Philosopher Philip Goff answers questions about panpsychism

    “—we need both the science and the philosophy to get a theory of consciousness. The science gives us correlations between brain activity and experience. We then have to work out the best philosophical theory that explains those correlations. In my view, the only theory that holds up to scrutiny is panpsychism.

    When I studied philosophy, we were taught that there were only two approaches to consciousness: either you think consciousness can be explained in conventional scientific terms, or you think consciousness is something magical and mysterious that science will never understand. I came to think that both of these views were pretty hopeless. I think we can have hope that we will one day have a science of consciousness, but we need to rethink what science is. Panpsychism offers us a way of doing this.”

    Read more