Existentialism is a Transhumanism

In the academic year 2015-2016 I was the co-director, with my colleague Naomi Stubbs, of a faculty seminar on Technology, Self, and Society. This was part of a larger three year project funded by a grant from the NEH and supported by LaGuardia’s Center for Teaching and Learning.  During my year as co-director the theme was Techno-Humanism and Transhumanism. You can see the full schedule for the seminar at the earlier link but we read four books over the year (in addition to many articles). In the Fall 2015 semester we read  The Technohuman Condition by Braden Allenby, and Superintelligence by Nick Bostrom. In the Spring semester we read The Future of the Mind by Michio Kaku, and Neuroethics, an anthology edited by Martha Farah. In addition to the readings Allenby and Kaku both gave talks at LaGuardia and since we had room for one more talk we invited David Chalmers who gave his paper on The Real and the Virtual (see short video for Aeon here).

All in all this was a fantastic seminar and I really enjoyed being a part of it. I was especially surprised to find out that some of the other faculty had used my Terminator and Philosophy book in their Science, Humanism and Technology course (I thought I was the only one who had used that book!).  The faculty came from many different disciplines ranging from English to Neuroscience and I learned quite a bit throughout the process. Two things became especially clear to me over the course of the year. The first is that many of my view can be described as Transhumanist in nature. The second is that a lot of my views can be described as Existentialist in nature.

The former was unsurprising but the latter was a bit surprising. I briefly studied Sartre and Existentialism as an undergraduate at San Francisco State University from 1997-1998 and I was really interested in Sartre’s work after that (i.e. I searched every book store in SF for anything Sartre related, bought, read it, and argued endlessly with anyone around about whether there was ‘momentum’ in consciousness). However once I got to Graduate School (in 2000)  I began to focus even more on psychology, neuroscience, and the philosophy of mind and I gradually lost contact with Sartre. I have never really kept up with the literature in this area (but I have recently read the Stanford Encyclopedia of Philosophy entries on Sartre and Existentialism), haven’t read Sartre in quite a while (but I did get out my copy of Being and Nothingness and Existentialism is a Humanism a couple of times during the seminar), and don’t work on any explicitly Sartrean themes in my published work (though there are connections between higher-order theories of consciousness and Sartre) but during this last year I found myself again and again appealing to distinctly Sartrean views, or at least Sartrean as I remembered it from being an undergraduate! By the end of it all I came to the view that Existential Transhumanism is an interesting philosophical view and probably is a pretty good descriptor for what I think about these issues. So, all that having been said, please take what follows with a grain of salt.

The core idea of existentialism as I understand it is a claim about the nature of persons and it is summed up in Sartre’s dictum that ‘existence precedes essence’. Whatever a person is you aren’t born one. You become one by acting, or as Sartre might put it, we create ourselves through our choices. Many interpret that claim as somehow being at odds with physicalism (Sartre was certainly a dualist) while I do not. But what does this mean? It helps to invoke the distinction between Facticity and Transcendence. Facticity relates to all of the things that are knowable about me from a third person point of view. It is what an intense biographer could put together. But I am not merely the sum total of those facts. I am essentially a project. An aiming toward the future. This aiming towards something is the way in which Sartre interpreted the notion of intentionality. All consciousness, for him, was necessarily directed at something that was not itself part of consciousness. This is why Sartre says ‘I am not what I am and I am what I am not”. I am not what I am in the sense of not being merely my facticity. I am what I am not in the sense that I am continually creating myself and turning myself into something that I was not previously.

Turning now for the moment to Transhumanism, I interpret this in roughly the same way as the World Transhumanist Association does. That is, as an extension of Humanism. Reason represents the best chance that Human Beings have of accomplishing our most cherished beliefs. These beliefs are enshrined in many of the world’s great religions and espouse principle of universality (all are equal in some sense), and compassion. Transhumanists see technology, at least in part, as a way of enhancing human reason and so as a way of overcoming our natural limitations.

One objection to this kind of project is that we could modify ourselves to the point of no longer being human, or to the point of our original selves not existing any further. Here I think the existentialist idea that there are no essential properties required to be human can help. We are defined by the fact that we are ‘a being whose being is in question’. That is we are essentially the kind of thing which creates itself, which aims towards something that is not yet what it is. Once one takes this kind of view one sees there is no danger in modifying ourselves. This seems to me to be very much in line with the general idea that the kinds of modifications the transhumanist envisions are not different in kind from the kind we have always done (shoes, eyeglasses, etc). Even if we are able to upload our minds to a virtual environment we may still be human by the existentialist definition.

In addition, another objection which was the central objection in the Allenby book, is that the Transhumanist somehow assumes a notion of the individual, as an independent rational entity, which doesn’t really exist. This may be the case but here I think that existentialism is very handy in helping us respond. The kind of individual envisioned by the Enlightenment thinkers may not exist but one way of seeing the transhumanist project is as seeking to construct such a being.

Enlightenment, in Kant’s immortal words, is

….man’s release from his self-incurred tutelage. Tutelage is man’s inability to make use of his understanding without direction from another. Self-incurred is this tutelage when its cause lies not in lack of reason but in lack of resolution and courage to use it without direction from another. Sapere aude! ‘Have courage to use your own reason!’- that is the motto of enlightenment

To this the transhumanist adds that Kant may have been wrong in thinking that we have enough reason and simply need the courage to use it. We may need to make ourselves into the kinds of rational beings which could fulfill the ideals of the Enlightenment.

There is a lot more that I would like to say about these issues but at this point I will briefly mention two there themes that don’t have much to do with existentialism. One is from Bostrom (see a recent talk of his at NYU’s Ethics of A.I. conference). One of Bostrom’s main claims is what he calls the orthogonality thesis. This is the claim that intelligence and values are orthogonal to each other. You can pair any level of intelligence with any goal at all.  This may be true for intelligence but I certainly don’t believe it is true for rationality.

Switching gears a bit I wanted to mention David Chalmers’ talk. I found his basic premise to be very convincing. The basic idea seemed to be that virtual objects count as real in much the same way as concrete objects do. When one is in a virtual environment (I haven’t been in one yet but I am hoping to try a Vive or a Playstation VR set soon!) and one interacts with a virtual dragon, there really is a virtual object that is there and that one is interacting with. The fundamental nature of this object is computational and there are some data structures that interact in various ways so as to make it roughly the same as ordinary objects and their atomic structure. Afterwards I asked if he thought the same was true for dreams. It seemed to me that many of the same arguments could be given for the conclusion that in one’s dreams one interacted with dream objects which were real in the same way as virtual objects. He said that perhaps but it depended on whether one was a functionalist about the mind. It seems to me that someone like Chalmers, who thinks that there is a computational/functional neural correlate for conscious states, is committed to this kind of view about dreams (even though he is a dualist). Dream objects should count as real on Chalmers’ view.

If Consciousness is an M-Property then it is Physical

Let us consider a possible world WM where consciousness is an M-property. At this world consciousness acts to collapse the wave function. Supposing that we live at WM can you or I have a zombie twin? A zombie twin is one that is physically identical to me in the relevant ways and which lacks consciousness. Suppose that I am actually suffering from a headache while eating Jelly Belly jelly beans. Then my zombie twin is in exactly the same physical states but without the consciousness. This means that the zombie must have a brain and that this brain must be in the same physical states that my brain is in. But my brain is in a collapsed state of definitely being in the relevant neural correlates (due to the presence of conscious experience). In the world where there is no consciousness, and which is physically just like WM (call this world WM-C), there would be no collapsed state. This is because the M property is missing. Since I am not in a superposition of states and my ‘zombie’ twin is we are not in the same physical states.

So it seems that if consciousness is an M-property then zombies are inconceivable and this in turns shows that if consciousness is an M-property then consciousness is a physical property.

But one might object that the right world to think about is WP. At this world the neural correlate of consciousness, construed here as distinct from consciousness itself (for the sake of argument), collapses the wave function. It is this world, continues the objection, rather than WM-C, that is the zombie world relative to WM. At WP there is a creature that has a brain, and which has a definite collapsed state identical to the neural correlates of the experience that I am actually having. This is the quantum zombie, not the one that is in the superposition of states.

I think it is is plausible that the creature at WP is in the same physical state as I am in some sense, but is it the case that WP has the same physics as WM? I would argue that they have similar physics but they are not the same. In WM when you lack consciousness you have a giant superposition that evolves deterministically according to the Schrodinger equation. There may be quasi-classical branches due to decoherence but that is not the same thing as there being a collapsed world, which is what we have at WP.

You cannot just start with WM and subtract consciousness and end up with WP. Instead you end up with WM-C and you then need to add some new physical law (or change the previous one), stating that it is the neural correlate that is responsible for collapsing the wave function. These worlds have different laws of physics and so are not the same. This is different than the zombie argument as normally construed, which leaves all the strictly physical laws in tact and simply posits the removal of the super-physical laws connecting the neural correlates of consciousness to actual consciousness.

Of course, consciousness probably isn’t an M-property but even so, any thoughts on the argument?

Consciousness as an M-Property (?)

Perhaps the central argument for thinking that the mind, consciousness included, must be a part of the physical world comes from the causal efficacy of mental states. Epiphenomenalism may be logically possible but we would need very powerful reasons for accepting it and many find that there are more powerful reasons for thinking that consciousness must play a causal role in the physical world. This has led many people to think that physicalism has the upper hand. Recently this status quo has been challenged by some philosophers who think that consciousness must be a fundamental irreducible component of the world.

One prominent defender of this view is David Chalmers who splits his credence between panpsychism and interactive dualism. On either of these views consciousness is a fundamental feature of the world that is posited in addition to the physical properties and yet it allows, or at least aspires to allow, that consciousness has a causal role to play in the physical world. Though I am optimistic about the prospects for physicalism, the kind of dualism I am most sympathetic to is the kind of Quantum Interactive Dualism as presented by Chalmers (and even more nice would be a physicalist version of that theory).

The basic idea is to define an m-property as one which acts as if it performs a measurement. M-properties will then have the effect of collapsing the wave function. Though there are many candidates for these kinds of properties consciousness seems to be a natural candidate. On this view we postulate a fundamental law that says that consciousness cannot be in superpositions and one that connects the physical correlates of consciousness to conscious experiences. This, argues Chalmers, gives us a way to make sense of a kind of interactive dualism. He does not endorse it, but it is worth exploring.

How does this give us interaction? He says,

what I think is going to actually happen here, if you think about it, is that consciousness most directly interacts with the neural correlates of consciousness, collapsing those out of superposition. So when you have an experience of red as opposed to green that may collapse a superposition of neural correlates of consciousness, say in inferiotemporal cortex, into the neural correlates of seeing red as opposed to the neural correlates of seeing green. That will then have an effect downstream. (at minute 56:33 in above linked video)

I like this kind of view and have floated something like it in an episode of spacetimemind (though, again, I would prefer it in a physicalist version). I figured I would jot down a few thoughts in hopes of eliciting some discussion to help me think through the various ideas.

First one might wonder why it is that consciousness cannot be in a superposition? Why can’t there be a state that is a superposition of consciously seeing red and consciously seeing green? One thing we might say is that phenomenal consciousness essentially involves awareness, so if I am consciously experiencing red this is essentially bound up with an awareness of myself as seeing red. This may provide some grounds for arguing that conscious experiences cannot be in superpositions.

Another major issue with this approach is the Quantum Zeno Effect. The rough idea here is that if you have a particle that will typically decay at some rate you can stop it from doing so by measuring it. This threatens to make it impossible for consciousness to show up in our world or to change. One possible way to use the above noted kind of awareness as a solution. If we suppose that we have the an unconscious representation of red, and that to make that unconscious representation conscious (in the phenomenal sense) we need to have a (possibly special kind) of awareness of that state (which in effect is the measurement by the outside observer) it will collapse into the (full) neural correlate of consciously seeing red. That will keep that state from evolving, and so will continue to be a conscious experience of phenomenal red. But since the relevant kind of awareness is external to the content (i.e red), the content of the awareness can change, thereby allowing conscious experience to change. This is, in effect, to combine a realist representationalism with a higher-order view.

One thing that seems to be in the background of Chalmers’ talk is the idea that when we get an interference pattern we have evidence that there was superposition, and conversely when we do not have an interference pattern we have wave function collapse (see minute 34-37 of his talk). But the Delayed Choice Quantum Erasers (which I have talked about previously) experiments put pressure on this kind of view.

There have been several recent experiments that build on this basic idea (see this recent paper in PNAS, or this recent paper in Science, or this one is Physical review Letters). I take these experiments to suggest that the existence of which-path information is enough to destroy the interference pattern.

So in these kinds of cases we make a measurement but since the measurement results in the loss of which-path information we still end up an interference pattern and so we seem to have an m-property (i.e. my conscious perception of the click produced by some detector) but we don’t have collapse (as indicated by the presence of an interference pattern).

Thus if we are to take the consciousness-as-m-property to be compatible with delayed choice quantum erasures we need to say that the system is in a superposition until there is a conscious experience and that even in the cases where there is an interference pattern there is still collapse. The system has collapsed from the superposition of interference pattern + no interference pattern into one or the other.

Towards some Reflections on the Tucson Conferences

As anyone who is even remotely interested in consciousness probably already knows, we are coming up on the big 20th Anniversary Towards a Science of Consciousness Conference in Tucson Arizona. Sadly I am not able to make it this year (due mostly to financial reasons) but I thought I would take a moment to reflect on my involvement with this conference.

I transferred to San Francisco State University in the Spring of 1997. I chose SF State over another college that had an interdisciplinary Cognitive Science program (I think it was Stanislaus, but I really can’t remember) mostly because I loved the city and was thrilled at the chance to set up shop in the Bay Area. I got there and had some adventures, taking Philosophy of Language with Kent Bach, which I really liked (some of the ideas I had in that semester eventually made it into my dissertation). But what really got me was the Philosophy of Mind course I took in the Spring of 1998 (also with Kent Bach), the same semester I was taking a Cognitive Science course. It was in those courses that I met someone who first mentioned the Tucson conference. I remember going home and using the dial-up modem (!!!!) to go online and look into this conference. It seemed really exciting (I also became aware of the Mind and Language seminar at NYU, which I really wanted to be a part of!).

I earned my Bachelors degree in 2000 and applied to exactly two graduate schools, which were NYU and Rutgers. I figured that if I was going to leave California it would be to go study consciousness and mind where it seemed to be flourishing. When I was rejected from both (no surprises there though I did get an offer from the Tisch School of NYU) I entered the graduate program at SFSU that same year. I started working with Mark Geisler in the psychology department and presented at my first professional conference with his lab (the Society for Psychophysical Research in Montreal, on a side note that conference was in October 2001, right during the Anthrax scare…not a good time to be flying around!!). Tucson2002
I suggested that we submit to the Tucson conference in Spring of 2002 and we did. Our lab had two posters at that conference. Mine was “EEG Response to Chromatic and Achromatic Hermann Grid Illusions” where I tried to show that the Herman Grid illusion was at least partially due to activity in V1. It was a great conference, and I remember being in one of the sessions, listening to a talk on how the brain processes information that allows a baseball player to catch a ball and the ways in which these players get it wrong when they talk about it. I thought to myself that it would be really cool to give a talk at this conference some day.

I came back to Tucson in 2006 to realize that goal and give my talk ‘What is a Brain State?’. My session was chaired by Hakwan Lau and I was exceedingly nervous. Even though I had presented at conferences before this was my first presentation in front of a significant number of people and I remember looking out at the audience and feeling a bit nauseated. Even so it was a lot of fun and I had some really good discussions with people afterwards.

I purchased the audio recording of my presentation and then dubbed it over a really bad video of the powerpoint slides so that you can relive this classic moment in Tucson history! Can you count all of the ‘ums’? I lose track…

I came back in 2008 to present “HOT Implies PAM: Why Higher-Order Theories of Consciousness are Committed to a Phenomenal Aspect for all Mental States, even Beliefs” which was less fun for me. My talk was at the end of the session and by the time it was my turn there was only 10 minutes left in the session (barely even enough time to get through the title!). For me it was a lot of flying (which I hate/am deathly afraid of) and a lot of money (which I don’t have and am not reimbursed for) and I thought it was not worth it at all. I remember drunkenly yelling at Uriah Kriegel that I thought that there was not very much time for discussion during the conference and that the conference should be about ideas and discussion rather than profit. Of course I found out how naive that was. The conference is not ‘for profit’ in any serious sense of that word and the format employed is fairly standard for science-based conferences. But it was partially because of my dissatisfaction with my experience that year that I started the Online Consciousness Conference in the summer of 2008.

The next time I was in Tucson was in 2012 when I presented “The 2D Argument Against Non-Materialism“. This was a very different experience. By this time I knew most of the people at the conference, including David Chalmers, and even worse most of them knew me! Perhaps Ironically I missed the days when I could slink into the back of a talk unnoticed by anyone and disappear right afterwards without a trace. I mean, there are worse things than hanging with cool and interesting people and talking about consciousness but it did bring home how much things have changed for me in the last 15 years!

photo by Tony Cheng

photo by Tony Cheng

Here’s to 20 more years!

The Nature of Consciousness

A couple of exciting developments today. First, over at Brains the symposium on Paul Churchland’s Matter and Consciousness 3rd edition is underway. It features commentary by Amy Kind, Pete Mandik, and William Ramsey. It will run through mid-Setember so be sure to check it out and get involved in the discussion!

In other news, today is the 5th anniversary of my dissertation defense. It’s kind of hard to believe that it has already been five years but there it is. Does this mean that I am not a junior faculty member anymore? That would be nice. Anyway, this time last year I gave the opening talk at the Graduate Center’s philosophy colloquium (see here for the post I wrote on it afterwards). Since then I have been very very busy but I have recently got back to writing up the paper which that talk was based on. It is still very much a rough draft but as usual feedback is appreciated!

Introspection, Acquaintance, and Higher-Order Representations

Over at Brains Wayne Wu has been posting about, among other things, introspection and attention. One of the interesting things to come out of the discussion was the notion of ‘cognitive attention’ which consists in directing one’s thoughts. If this is truly a kind of attention then perhaps we can see higher-order thought and AIR theories as invoking different kinds of attention while both accept the transitivity principle. I hope to come back to this issue because I think it is time to start thinking about the connections between these two theories (and especially how we might experimentally differentiate them) but I will have to put that off. In this post I want to argue that higher-order theories are compatible with the acquaintance approach (see Brie Gertler’s comment for some links to some papers on this).

Before we begin we should note a potential confound here that may result in people talking past one another. Typically introspection is thought of as producing thoughts of the form ‘I am in pain now’ or ‘pain is instantiated in me now’ (see Brie Gertler’s paper in the link above for instance). And, of course, it is exactly these kinds of thoughts that higher-orer thought theories invoke to explain phenomenal consciousness in the first place. But of course by ‘pain’ the opponent to higher-order theories simply means what we would call ‘conscious pain’ and so we should reinterpret the above introspective claims as ‘I am in conscious pain now’ or ‘conscious pain is instantiated in me now’. They take the ‘conscious pain’ bit to actually be the phenomenal property of pain itself. A large art of the project that I have been engaged in recently has been to show that there is a way of thinking of higher-order thought theory that lets us, if we want, keep all of the benefits of the first-order theorist. On this view phenomenal consciousness consists in instantiating the right kind of higher-order representation. In particular one that attributes mental states and properties to the subject of the experience. This is what I have called the HOROR theory of phenomenal consciousness and it is metaphysically neutral.

In fact it looks like Dave endorses a non-physical version of this kind of theory in his response to Benj Hellie that he mentions in the discussion. There he says,

In effect, our phenomenology involves both a foreground awareness of redness and a background acquaintance with our awareness of redness. I think the most plausible line here is that phenomenal awareness is an acquaintance-involving relation by its very nature: in virtue of the nature of awareness, to be aware of x entails being acquainted with one’s awareness of x

and in the footnote he continues,

This is a relative of higher-order representation theories of consciousness, and especially of the Brentano-style self-representational views of consciousness that have become popular in recent years (see e.g. Kriegel and Williford 20xx). Some differences: the background awareness should be understood as Russellian instance-acquaintance rather than as a standard form of representation (this immediately avoids all objections from higher-order misrepresentation as well as from oversophistication), and the view does not lend any support to reductive views of consciousness. The awareness relation that the view appeals to is irreducibly a phenomenal relation. Of course someone might attempt to turn this into a reductive theory by identifying the awareness relation by a relation understood in functional terms, say. But just as in the case of first-order representationalism (discussed in chapter 8 of TCC), this move requires an additional and independent functionalism about the phenomenal, a view that is no more plausible here than elsewhere, and which leads to an explanatory gap that is as wide as ever.

Now here he is talking about phenomenal consciousness and not introspection and I am not sure whether the view is that this entire complex gets embedded in an introspective judgement or whether introspecting involves the background awareness coming to the foreground but either way is compatible with the HOROR theory. So, consider the way that Gertler lays out the Acquaintance Approach. She sums it up in the following three theses,

[Acquaintance Approach] Some introspective knowledge consists in judgments that
(1) are directly tied to their truthmakers;
(2) depend, for their justification, only on the subject’s conscious states at the time of the judgment; and
(3) are more strongly justified than any empirical judgments that do not meet conditions (1) and (2).

To be ‘directly tied’ on her account involves demonstrative attention and though that is not a requirement of the view I am happy enough with it. So, on the HOROR theory what will be required is that we deploy demonstrative attention to the proper higher-order representation and is compatible with (1). The term ‘conscious state’ in (2) should be interpreted as the appropriate higher-order representation and so the claim is just that some introspective judgements are justified solely by certain higher-order representations, which is compatible with HOROR theory and because of (1) and (2) these judgments are more strongly justified than other that don’t meet (1) and (2).

So not only is the HOROR theory compatible with introspective acquaintance it is also compatible with ‘same-order’ acquaintance.

Consciousness and its Place in Physical Reality

In the Spring 2013 semester I initiated a new course at LaGuardia that had the theme Cosmology, Consciousness, and Computation. The basic idea was to explore issues relating to physicalism. Intuitively, physicalism is the view that everything that exists is physical but what is the nature of physical reality? The idea I had was to have the couse divided into three sections. In the first section we would do a conceptual physics course talking about the development of physics from the ancient world to the present day. Then we would turn to issues about consciousness and mind and where they fit in the physical picture we have so far developed. After that we turn to issues about computation; Is the universe computable? Or perhaps does it instantiate some computation? Is consciousness computational? Are we living in a simulation? Is the universe a hologram?

In my quest to have low cost book options for students I have adopted the Terminator book I co-edited and have supplemented that with readings from the Stanford Encyclopedia of Philosophy and other online material. The reception to the course was very good and I am really looking forward to doing it a second time in Fall 2013. I have updated the syllabus and, as usual, would welcome any suggestions or feedback.

Week I: Introduction
• →Richard Brown on What is Philosophy? – http://www.youtube.com/watch?v=ySS0bNeWZOg

Week 2: Early Attempts to Understand Mind and Physical Reality
• →Terminator Ch 10: The Nature of Time and the Universe
• Time- http://plato.stanford.edu/entries/time/
• Richard Brown on Pre-Socratic Philosophy- http://www.youtube.com/watch?v=zfLgRotdcKI&list=PLfR0qhtOKP6eYkUoW7DH8qdjwEyQnsbPJ&index=2
• Pre-Socratic Philosophy- http://plato.stanford.edu/entries/presocratics/
• Ancient Theories of the Soul- http://plato.stanford.edu/entries/ancient-soul/
• Parmenides- http://plato.stanford.edu/entries/parmenides/
• Zeno’s Paradoxes- http://plato.stanford.edu/entries/paradox-zeno/
• Ancient Atomism- http://plato.stanford.edu/entries/atomism-ancient/
• Democritus- http://plato.stanford.edu/entries/democritus/
• Intentionality in Ancient Philosophy- http://plato.stanford.edu/entries/intentionality-ancient/
• Time- http://plato.stanford.edu/entries/time/

Week 3: Modern Philosophy and Modern Science
• →Terminator Ch 2 –Animal consciousness, Descartes, and Emotions
• Descartes’ Physics- http://plato.stanford.edu/entries/descartes-physics/
• Descartes’ Epistemology- http://plato.stanford.edu/entries/descartes-epistemology/
• Descartes’ Theory of Ideas- http://plato.stanford.edu/entries/descartes-ideas/
• Other Minds- http://plato.stanford.edu/entries/other-minds/
• Animal Consciousness- http://plato.stanford.edu/entries/consciousness-animal/
• Locke on Real Essence- http://plato.stanford.edu/entries/real-essence/
• Locke’s Philosophy of Science- http://plato.stanford.edu/entries/locke-philosophy-science/
• Newton’s Philosophy- http://plato.stanford.edu/entries/newton-philosophy/
• Isaac Newton- http://plato.stanford.edu/entries/newton/
• Newton’s Views on Space, Time, and Motion- http://plato.stanford.edu/entries/newton-stm/
• The Contents of Perception- http://plato.stanford.edu/entries/perception-contents/
• The Problem of Perception- http://plato.stanford.edu/entries/perception-problem/

Week 4: Relativity Physics
• →Terminator Ch 8: paradoxes of time travel
• Einstein for Everyone: http://www.pitt.edu/~jdnorton/teaching/HPS_0410/chapters/index.html
• Brian Greene’s The Elegant Universe on NOVA- http://www.pbs.org/wgbh/nova/physics/elegant-universe.html#elegant-universe-einstein.html
• Time Travel and Modern Physics- http://plato.stanford.edu/entries/time-travel-phys/
• Time Machines- http://plato.stanford.edu/entries/time-machine/
• The Equivalence of Mass and Energy- http://plato.stanford.edu/entries/equivME/
• The Hole Argument- http://plato.stanford.edu/entries/spacetime-holearg/
• David Lewis’ The Paradoxes of Time Travel- http://www.csus.edu/indiv/m/merlinos/Paradoxes%20of%20Time%20Travel.pdf

Week 5: Quantum Mechanics
• Brian Greene’s The Fabric of the Cosmos on NOVA- http://www.pbs.org/wgbh/nova/physics/fabric-of-cosmos.html
• Copenhagen Interpretation of Quantum Mechanics: http://plato.stanford.edu/entries/qm-copenhagen/
• Many Worlds Interpretation of Quantum Mechanics- http://plato.stanford.edu/entries/qm-manyworlds/
• The Uncertainty Principle: http://plato.stanford.edu/entries/qt-uncertainty/
• Quantum Entanglement and Information: http://plato.stanford.edu/entries/qt-entangle/
• The Einstein-Podolsky-Rosen Argument in Quantum Theory- http://plato.stanford.edu/entries/qt-epr/
• Measurement in Quantum Theory: http://plato.stanford.edu/entries/qt-measurement/
• Quantum Mechanics- http://plato.stanford.edu/entries/qm/
• Richard Feynman on Double Slit Experiment- http://www.youtube.com/watch?v=hUJfjRoxCbk&list=PLfR0qhtOKP6eYkUoW7DH8qdjwEyQnsbPJ&index=3

Week 6: The Nature and Origin of the Universe
• →The Scale of the Universe- http://htwins.net/scale2/
• Hubble Deep Field: http://hubblesite.org/hubble_discoveries/hubble_deep_field/
• Cosmology and Theology- http://plato.stanford.edu/entries/cosmology-theology/
• Atheism and Agnosticism- http://plato.stanford.edu/entries/atheism-agnosticism/
• Religion and Science- http://plato.stanford.edu/entries/religion-science/
• Teleological Arguments for God’s Existence- http://plato.stanford.edu/entries/teleological-arguments/
• Cosmological Argument- http://plato.stanford.edu/entries/cosmological-argument/
• The Possible Parallel Universe of Dark Matter- http://discovermagazine.com/2013/julyaug/21-the-possible-parallel-universe-of-dark-matter#.UhDhPRbtaz6

Week 7: The Possibility of Life Beyond Earth
• Life- http://plato.stanford.edu/entries/life/
• Molecular Biology- http://plato.stanford.edu/entries/molecular-biology/
• Finding Life Beyond Earth- http://www.youtube.com/watch?v=FVzmGaGCqP8

Week 8: Consciousness in the Physical World?
• Consciousness- http://plato.stanford.edu/entries/consciousness/
• Representational Theories of Consciousness- http://plato.stanford.edu/entries/consciousness-representational/
• Functionalism- http://plato.stanford.edu/entries/functionalism/
• The Mind/Brain Identity Theory- http://plato.stanford.edu/entries/mind-identity/
• Dualism- http://plato.stanford.edu/entries/dualism/
• Zombies- http://plato.stanford.edu/entries/zombies/

Week 9: Beyond Physicalism?
• Eliminative Materialism- http://plato.stanford.edu/entries/materialism-eliminative/
• Folk Psychology as a Theory- http://plato.stanford.edu/entries/folkpsych-theory/
• The Philosophy of Neuroscience- http://plato.stanford.edu/entries/neuroscience/
• Panpsychism- http://plato.stanford.edu/entries/panpsychism/

Week 10: Transhumanism
• →Terminator Ch 4: Extended Mind, Transhumanism
• A History of Transhumanist Thought- http://www.fhi.ox.ac.uk/documents/journal_publications/al/nick_bostrom
• Biohackers: A Journey into Cyborg America- http://www.youtube.com/watch?v=K0WIgU7LRcI&list=PLfR0qhtOKP6eYkUoW7DH8qdjwEyQnsbPJ&index=48
• Tim Cannon on Potential Benefits of Sensory Augmentation- http://www.youtube.com/watch?v=KZ1KCpSL51E&list=PLfR0qhtOKP6eYkUoW7DH8qdjwEyQnsbPJ&index=46
• Aubrey de Grey on Defeating Aging- http://www.youtube.com/watch?v=d1FBJGl2c-Y&list=PLfR0qhtOKP6eYkUoW7DH8qdjwEyQnsbPJ&index=17

Week 11: A.I. and The Singularity
• →Terminator Ch 1: A.I., Chinese Room, Transhumanism
• →Terminator Ch 3: Why always with the killing?
• The Chinese Room Argument- http://plato.stanford.edu/entries/chinese-room/
• The Turing Test- http://plato.stanford.edu/entries/turing-test/
• The Frame Problem- http://plato.stanford.edu/entries/frame-problem/
• David Chalmers’ The Singularity: A Philosophical Analysis- http://consc.net/papers/singularity.pdf
• David Chalmers on Simulation and Singularity- http://www.youtube.com/watch?v=FafHdF_D8gA&list=PLfR0qhtOKP6eYkUoW7DH8qdjwEyQnsbPJ&index=13

Week 12: The Simulation Argument & The Holographic Hypothesis
• Nick Bostrom’s Simulation Argument Website- http://www.simulation-argument.com
• Nick Bostrom on The Simulation Argument- http://www.youtube.com/watch?v=nnl6nY8YKHs&list=PLfR0qhtOKP6eYkUoW7DH8qdjwEyQnsbPJ&index=24
• David Chalmers’ The Matrix as Metaphysics- http://consc.net/papers/matrix.html
• Leonard Susskind on The World as a Hologram- http://www.youtube.com/watch?v=2DIl3Hfh9tY&list=PLfR0qhtOKP6eYkUoW7DH8qdjwEyQnsbPJ&index=16

Consciousness Without First-Order Representations

I am getting ready to head out to San Diego for the Association for the Scientific Study of Consciousness 17th Annual meeting. I have organized a symposium on the Role of the Prefrontal Cortex in Conscious Experience which will feature talks by Rafi Malach, Joe Levine, Doby Rahnev, and me! A rehearsal of my talk is below. As usual any feedback appreciated.

Also relevant are the following papers:

1.(Lau & Brown) The Emperor’s New Phenomenology? The Empirical Case for Conscious Experience without First-Order Representations

2. (Brown 2012) The Brain and its States

The ASSC Students have also set up the following online debate forum: http://theasscforum.blogspot.com/2013/06/symposium-1-prefrontal-cortex.html

A longer video explaining the Rahnev results can be found here: http://www.youtube.com/watch?v=_gQYdGRbkpE

Lot’s of ways to get involved in the discussion!

[cross-posted at Brains]

Recent Events

Well, the semester at LaGuardia is finally coming to a close (our schedule is out of step with the rest of CUNY). A lot has been going on and I have barely had time to do anything but since today is our reading day and I have a brief break before final exams come in, I thought I would quickly talk about what has been going on.

My new course, Cosmology, Consciousness, and Computation was a huge success and the students really seemed to enjoy the chance to take these kinds of questions seriously. The basic idea behind the course is to explore issues related to physicalism but after a grounding in the actual physics. My experiment to use the Stanford Encyclopedia as a primary text seemed to work ok as well. Some of the readings are fairly technical but I gave students the choice of which to read and which to write a one page summary/reaction to. They also seemed to like the Terminator book, which was nice. This is the first time I have used it in a class. I am toying with the idea of maybe recording the lectures for this course over the summer as I prepare to teach it again next semester (but I am also teaching philosophy of religion and ethics over the summer and I am tempted to record my philosophy of religion as well…they do overlap a bit so maybe I’ll do both!). For those interested, here is the syllabus. As with any new class I expect to update a lot of it in light of what happened this semester and any feedback would be appreciated.

All of that will have to wait until later in July, though, since I am currently getting ready for my trip to San Diego for the 17th meeting of the Association for the Scientific Study of Consciousness (ASSC). This year I have organized a symposium on the Role of the Prefrontal Cortex in Conscious Experience. The speakers are Rafi Malach, Joe Levine, Doby Rahnev, and myself. I am really looking forward to it, as well as to the rest of the program! I am hoping to post a video of my talk in the nearish future.

I have also been working on a new paper, which came out of discussion at the 5th Online Consciousness Conference. It is entitled Consciousness is (Probably) a Biological Phenomenon. Those who know me know that I am attracted to an identity theory when it comes to consciousness and that I harbor the suspicion that consciousness is a uniquely biological phenomenon. This paper is my first attempt to spell out an answer to Chalmers’ fading and dancing qualia arguments using empirical results (in particular the partial report results that have figured in the overflow debate (see here and here)). It is extremely drafty (I have been working on it an hour here and hour there for the last few weeks) and any feedback would be much appreciated.

In addition to all of this I have just returned from my trip to the Omaha Kripke Conference (during which I was also on my first dissertation committee at the Grad Center, which was very much fun but then I also had to read and think about a dissertation!), which was a really rewarding experience. Omaha is a wonderful town and the conference itself was excellent, if exhausting. Three days of excellent papers and excellent discussion, and it was very cool to see Saul so active and engaging with the material. Unfortunately, due to bad weather, he came late and so he missed my talk but there was none the less a lot of very helpful discussion. The main objection was Dan Shargel’s ‘hierarchy objection’ which he presented at Tucson last year (the basic idea is that we can move the argument up to the level of appearance and imagine that we have that appearance without the neural state, etc). I have got to get better at explaining what my answer to that objection is. After the discussion at the conference I have come to think that the main problem is that we are using ‘how pain appears to me’ as a way to pick out two different states, one a psychological state and the other a neural state. On the one hand we use it to pick out the pain sensations, that is the first-order sensing of bodily damage. But we can also use it to pick out the neural state that the appearance is identical to (note: not the neural state that the sensation is identical to, but the neural state that is identical to the awful painfulness appearance. We can use the appearance property as a way to pick out that state itself). It is in that second sense that we avoid the charge of regress. This takes some spelling out to make sense of it and I am hoping to write something more detailed on it in the nearish future (hopefully before I head out to the ASSC).

During and after one of the other sessions I had the chance to talk to Saul about his 1963 paper Semantical Considerations on Modal Logic, which I have discussed previously on the blog. When I suggested that it was a cost to one’s theory to give up logical constants in your quantified modal logic he insisted that it was not. This was because for any sentence with a logical constant in it we could translate it into a sentence without the constant without loss of meaning using Quine’s trick of inventing a predicate. This led me to wonder whether this made it the case that we could reformulate the bothersome proofs using translated sentences. At the time I wasn’t able to come with a way to do this but once I got home I thought about it a bit more and came up with the following.

In the original reductio we used this sentences ☐∃x(x=k), where this is read as ‘there exists an x such that x is identical to Saul Kripke’. How would we translate this sentence to get rid of the constant? We would replace the constant with a predicate, say ‘K’ (‘the Kripisizer’) and thus we would get ☐∃x(x=Ky) but this has a free variable in it so we would have to take it as asserting the ‘closed’ version, so we get ∀y☐∃x(x=Ky). We can then proceed to prove this in the same way as before using a reductio

1. ~∀y☐∃x(x=Ky) -assumption for reductio
2. ∃y~☐∃x(x=Ky) -1, quantifier exchange
3. ∃y◊~∃x(x=Ky) -2, definition of ☐
4. ∃y◊∀x~(x=Ky) -3, quantifier exchange
5. ∃y◊~(Ky=Ky) -Universal instantiation on 4
6. ∀y☐(Ky=Ky) -instance of axiom of identity
7. ~∃y~☐(Ky=Ky) -6, quantifier exchange
8. ~∃y◊~(Ky=Ky) -7, definition of ☐
9. ∃y◊~(Ky=Ky) & ~∃y◊~(Ky=Ky) -4,8 -conjunction introduction
10. ∀y☐∃x(x=Ky) -1-9 reduction

I think the main issue with this reformulated proof is line 5 when I use ‘Ky’ as an instance of x in 4. It seems to me that this move should be allowed, though. This is because part of the whole point of the 1963 paper was that we could block these kinds of proofs and still keep our traditional quantification theory. So we should be able to use UI, but if we are not allowed the use of constants then we will have to use predicates, which is what I did. Also, the variable in 5 is not free and is bound by the existential quantifier. So all in all I think this reformulated proof works but I really haven’t had the time to think about it very carefully.

Well that is enough for now…time to head over to Brains to read some of the commentaries in the Symposium on Louise Richardson’s “Flavor, Taste and Smell”.

Pain, Painfulness, and Kripke’s Modal Argument

I am getting ready to head out to Omaha for a conference on the work of Saul Kripke at the University of Nebraska Omaha. My talk is on Monday the 20 but for those that can’t make it I have recorded the below rehearsal. It should be a really fun conference. I have never been to the ‘midwest’ before so I am looking forward to finally setting foot in a flyover state. As for the talk, the content is stuff people familiar with my work might recognize but I think I am getting better at expressing it. As usual, any comments or feedback is welcome.