Raising the Table Stakes for Successful Theories of Consciousness

What should we expect out of a theory of consciousness?

For a scientific theory of consciousness to have even the slightest chance at being correct it must be able to address- at the very least– the following four questions*:

  1. Why consciousness exists at all (i.e. “the hard problem“; why we are not p-zombies)
  2. How it is possible to experience multiple pieces of information at once in a unitary moment of experience (i.e. the phenomenal binding problem; the boundary problem)
  3. How consciousness exerts the causal power necessary to be recruited by natural selection and allow us to discuss its existence (i.e. the problem of causal impotence vs. causal overdetermination)
  4. How and why consciousness has its countless textures (e.g. phenomenal color, smell, emotions, etc.) and the interdependencies of their different values (i.e. the palette problem)

In addition the theory must be able to generate experimentally testable predictions. In Popper’s sense the theory must make “risky” predictions. In a Bayesian sense the theory must be able to generate predictions that have a much higher likelihood given that the theory is correct versus not so that the a posteriori probabilities of the different hypotheses are substantially different from their priors once the experiment is actually carried out.

As discussed in a previous article most contemporary philosophies of mind are unable to address one or more of these four problems (or simply fail to make any interesting predictions). David Pearce’s non-materialist physicalist idealism (not the schizophrenic word-salad that may seem at first) is one of the few theories that promises to meet this criteria and makes empirical predictions. This theory addresses the above questions in the following way:

(1) Why does consciousness exist?

Consciousness exists because reality is made of qualia. In particular, one might say that physics is implicitly the science that studies the flux of qualia. This would imply that in fact all that exists is a set of experiences whose interrelationships are encoded in the Universal Wavefunction of Quantum Field Theory. Thus we are collapsing two questions (“why does consciousness arise in our universe?” and “why does the universe exist?”) into a single question (“why does anything exist?”). More so, the question “why does anything exist?” may ultimately be solved with Zero Ontology. In other words, all that exists is implied by the universe having literally no information whatsoever. All (apparent) information is local; universally we live in an information-less quantum Library of Babel.

(2) Why and how is consciousness unitary?

Due to the expansion of the universe the universal wavefunction has topological bifurcations that effectively create locally connected networks of quantum entanglement that are unconnected to the rest of reality. These networks meet the criteria of being ontologically unitary while having the potential to hold multiple pieces of information at once. In other words, Pearce’s theory of consciousness postulates that the world is made of a large number of experiences, though the vast majority of them are incredibly tiny and short-lived. The overwhelming bulk of reality is made of decohered micro-experiences which are responsible for most of the phenomena we see in the macroscopic world ranging from solidity to Newton’s laws of motion.

A few of these networks of entanglement are us: you, right now, as a unitary “thin subject” of experience, according to this theory, are one of these networks (cf. Mereological Nihilism). Counter-intuitively, while a mountain is in some sense much bigger than yourself, at a deeper level you are bigger than the biggest object you will find in a mountain. Taking seriously the phenomenal binding problem we have to conclude that a mountain is for the most part just made of fields of decohered qualia, and thus, unlike a given biologically-generated experience, it is not “a unitary subject of experience”. In order to grasp this point it is necessary to contemplate a very extreme generalization of Empty Individualism: not only is it that every moment of a person’s experience is a different subject of experience, but the principle applies to every single network of entanglement in the entire multiverse. Only a tiny minority of these have anything to do with minds representing worlds. And even those that participate in the creation of a unitary experience exist within an ecosystem that gives rise to an evolutionary process in which quintillions of slightly different entanglement networks compete in order to survive in the extreme environments provided by nervous systems. Your particular experience is an entanglement network that evolved in order to survive in the specific brain state that is present right now. In other words, macroscopic experiences are the result of harnessing the computational power of Quantum Darwinism by applying it to a very particular configuration of the CNS. Brain states themselves encode Constraint Satisfaction Problems with the networks of electric gradients across firing neurons in sub-millisecond scales instantiating constraints whose solutions are found with sub-femtosecond quantum darwinism.

(3) How can consciousness be causally efficacious?

Consciousness exerts its causal power by virtue of being the only thing that exists. If anything is causal at all, it must, in the final analysis, be consciousness. No matter one’s ultimate theory of causality, assuming that physics describes the flux of qualia, then what instantiates such causality has to be this very flux.

Even under Eternalism/block view of the universe/Post-Everettian QM you can still meaningfully reconstruct causality in terms of the empirical rules for statistical independence across certain dimensions of fundamental reality. The dimensions that have time-like patterns of statistical independence will subjectively be perceived as being the arrows of time in the multiverse (cf. Timeless Causality).

Now an important caveat with this view of the relationship between qualia and causality is that it seems as if at least a weak version of epiphenomenalism must be true. The inverted spectrum thought experiment (ironically usually used in favor of the existence of qualia) can be used to question the causal power of qualia. This brings us to the fourth point:

(4) How do we explain the countless textures of consciousness?

How and why does consciousness have its countless textures and what determines its interrelationships? Pearce anticipates that someday we will have a Rosetta Stone for translating patterns of entanglement in quantum fields to corresponding varieties of qualia (e.g. colors, smells, sounds, etc.). Now, admittedly it seems far fetched that the different quantum fields and their interplay will turn out to be the source of the different qualia varieties. But is there something that in principle precludes this ontological correspondence? Yes, there are tremendous philosophical challenges here, the most salient of which might be the “being/form boundary”. This is the puzzle concerning why states of being (i.e. networks of entangled qualia) would act a certain way by virtue of their phenomenal character in and of itself (assuming its phenomenal character is what gives them reality to begin with). Indeed, what could possibly attach at a fundamental level the behavior of a given being and its intrinsic subjective texture? A compromise between full-fledged epiphenomenalism and qualia-based causality is to postulate a universal principle concerning the preference for full-spectrum states over highly differentiated ones. Consider for example how negative and positive electric charge “seek to cancel each other out”. Likewise, the Quantum Chromodynamics of quarks inside protons and neutrons works under a similar but generalized principle: color charges seek to cancel/complement each other out and become “white” or “colorless”. This principle would suggest that the causal power of specific qualia values comes from the gradient ascent towards more full-spectrum-like states rather than from the specific qualia values on their own.  If this were to be true, one may legitimately wonder whether hedonium and full-spectrum states are perhaps one and the same thing (cf. Valence structuralism). In some way this account of the “being/form boundary” is similar to process philosophy,  but unlike process philosophy, here we are also taking mereological nihilism and wavefuction monism seriously.

However far-fetched it may be to postulate intrinsic causal properties for qualia values, if the ontological unity of science is to survive, there might be no other option. As we’ve seen, simple “patterns of computation” or “information processing” cannot be the source of qualia, since nothing that isn’t a quantum coherent wavefunction actually has independent existence. Unitary minds cannot supervene on decohered quantum fields. Thus the various kinds of qualia have to be searched for in networks of quantum entanglement; within a physicalist paradigm there is nowhere else for them to be.

Alternative Theories

I am very open to the possibility that other theories of consciousness are able to address these four questions. I have yet to see any evidence of this, though. But, please, change my mind if you can! Does your theory of consciousness rise to the challenge?

* This particular set of criteria was proposed by David Pearce (cf. Qualia Computing in Tucson). I would agree with him that these are crucial questions; indeed they make up the bare minimum that such a theory must satisfy. That said, we can formulate more comprehensive sets of problems to solve. An alternative framework that takes this a little further can be found in Michael Johnson’s book Principia Qualia (Eight Problems for a New Science of Consciousness).

Qualia Computing Attending the 2017 Psychedelic Science Conference

From the 19th to the 24th of April I will be hanging out at Psychedelic Science 2017 (if you are interested in attending but have not bought the tickets: remember you can register until the 14th of February).

12020058_10206806127125111_5414514709501746096_nIn case you enjoy Qualia Computing and you are planning on going, now you can meet the human who is mostly responsible for these articles. I am looking forward to meeting a lot of awesome researchers. If you see me and enjoy what I do, don’t be afraid to say hi.

Why Care About Psychedelics?

Although the study of psychedelics and their effects is not a terminal value here in Qualia Computing, they are instrumental in achieving the main goals. The core philosophy of Qualia Computing is to (1) map out the state-space of possible experiences, (2) identify the computational properties of consciousness, and (3) reverse-engineer valence so as to find the way to stay positive without going insane.

Psychedelic experiences happen to be very informative and useful in making progress towards these three goals. The quality and magnitude of the consciousness alteration that they induce lends itself to exploring these questions. First, the state-space of humanly accessible experiences is greatly amplified once you add psychedelics into the mix. Second, the nature of these experiences is all but computationally dull (cf. alcohol and opioids). On the contrary, psychedelic experiences involve non-ordinary forms of qualia computing: the textures of consciousness interact in non-trivial ways, and it stands to reason that some combinations of these textures will be recruited in the future for more than aesthetic purposes. They will be used for computational purposes, too. And third, psychedelic states greatly amplify the range of valence (i.e. the maximum intensity of both pain and pleasure). They unlock the possibility of experiencing peak bliss as well as intense suffering. This strongly suggests that whatever underpins valence at the fundamental level, psychedelics are able to amplify it to a fantastic (and terrifying) extent. Thus, serious valence research will undoubtedly benefit from psychedelic science.

It is for this reason that psychedelics have been a major topic explored here since the beginning of this project. Here is a list of articles that directly deal with the subject:

List of Qualia Computing Psychedelic Articles

1) Psychophysics For Psychedelic Research: Textures

How do you make a psychophysical experiment that tells you something foundational about the information-processing properties of psychedelic perception? I proposed to use an experimental approach invented by Benjamin J. Balas based on the anatomically-inspired texture analysis and synthesis techniques developed by Eero Simoncelli. In brief, one seeks to determine which summary statistics are sufficient to create perceptual (textural) metamers. In turn, in the context of psychedelic research, this can help us determine which statistical properties are best discriminated while sober and which differences are amplified while on psychedelics.

2) State-Space of Drug Effects

I distributed a survey in which I asked people to rate drug experiences along 60 different dimensions. I then conducted factor analysis on these responses. This way I empirically derived six major latent traits that account more than half of the variance across all drug experiences. Three of these factors are tightly related to valence, which suggests that hedonic-recalibration might benefit from a multi-faceted approach.

3) How to Secretly Communicate with People on LSD

I suggest that control interruption (i.e. the failure of feedback inhibition during psychedelic states) can be employed to transmit information in a secure way to people who are in other states of consciousness. A possible application of this technology might be: You and your friends at Burning Man want to send a secret message to every psychedelic user on a particular camp in such a way that no infiltrated cop is able to decode it. To do so you could instantiate the techniques outlined in this article on a large LED display.

4) The Hyperbolic Geometry of DMT Experiences: Symmetries, Sheets, and Saddled Scenes

This article discusses the phenomenology of DMT states from the point of view of differential geometry. In particular, an argument is provided in favor of the view that high grade psychedelia usually involves a sort of geometric hyperbolization of phenomenal space.

5) LSD and Quantum Measurements: Can you see Schrödinger’s cat both dead and alive on acid?

We provide an empirical method to test the (extremely) wild hypothesis that it is possible to experience “multiple branches of the multiverse at once” on high doses of psychedelics. The point is not to promote a particular interpretation of such experiences. Rather, the points is that we can actually generate predictions from such interpretations and then go ahead and test them.

6) Algorithmic Reduction of Psychedelic States

People report a zoo of psychedelic effects. However, as in most things in life, there may be a relatively small number of basic effects that, when combined, can account for the wide variety of phenomena we actually observe. Algorithmic reductions are proposed as a conceptual framework for analyzing psychedelic experiences. Four candidate main effects are proposed.

7) Peaceful Qualia: The Manhattan Project of Consciousness

Imagine that there was a world-wide effort to identify the varieties of qualia that promote joy and prosocial behavior at the same time. Could these be used to guarantee world peace? By giving people free access to the most valuable and prosocial states of consciousness one may end up averting large-scale conflict in a sustainable way. This articles explores how this investigation might be carried out and proposes organizational principles for such a large-scale research project.

8) Getting closer to digital LSD

Why are the Google Deep Dream pictures so trippy? This is not just a coincidence. People call them trippy for a reason.

9) Generalized Wada-Test

In a Wada-test a surgeon puts half of your brain to sleep and evaluates the cognitive skills of your awake half. Then the process is repeated in mirror image. Can we generalize this procedure? Imagine that instead of just putting a hemisphere to sleep we gave it psychedelics. What would it feel like to be tripping, but only with your right hemisphere? Even more generally: envision a scheme in which one alternates a large number of paired states of consciousness and study their mixtures empirically. This way it may be possible to construct a network of “opinions that states of consciousness have about each other”. Could this help us figure out whether there is a universal scale for subjective value (i.e. valence)?

10) Psychedelic Perception of Visual Textures

In this article I discuss some problems with verbal accounts of psychedelic visuals, and I invite readers to look at some textures (provided in the article) and try to describe them while high on LSD, 2C-B, DMT, etc. You can read some of the hilarious comments already left in there.

11) The Super-Shulgin Academy: A Singularity I Can Believe In

Hard to summarize.