Is Sir Roger Penrose's Science of Consciousness Spooky?

medium |  Thus could Roger Penrose’s position be entirely motivated by scientific anti-reductionism? Doctor Susan Blackmore certainly thinks that this is an important motivation. Or at least the programme maker in the following quote does. She writes:

“Finally they got to consciousness. With clever computer graphics and Horizonesque hype they explained that brave scientists, going against the reductionist grain, can now explain the power of the mind to transcend death. It all comes down to quantum coherence in the microtubules. And to make sure the viewer knows that this is ‘real science’ the ponderous voice-over declared ‘Their theory is based on a well established field of science; the laws of general relativity, as discovered by Einstein.’…”

Sure, Blackmore’s talking here about “near-death experiences” (NDEs). Yet those who believe in this — or at least some of them — have found succor in “quantum coherence in the microtubules”. Now don’t those things sound very scientific? Of course we’ll now need to know what quantum coherence is. (Or is it really a case of needing to know whether or not the believers in NDEs actually have any idea of what quantum coherence is?)

Of course Penrose and Stuart Hameroff can’t personally be blamed for spook-lovers quoting their work. However, a psychologist or philosopher may tell us that these two fellows — both scientists — are motivated by very similar things. After all, Hameroff himself has talked about NDEs.

Specifically, Hameroff has said that when the brain dies (or stops functioning), the information within that brain’s microtubules remains alive (as it were) or intact. Moreover, the information of the microtubules leaks out into the world (or, well, into the universe). Not only that: this microtubular information remains intact and bound together because of the power of quantum coherence.

Hameroff goes even further. He’s stated that this phenomenon explains why the subject can experience — see? — himself hovering over his own body. That is, Hameroff seems to endorse near-death experiences. Yet even if “information” (P.M.S. Hacker would have a field day with this word — see here) did leak out into the universe, how would that make it the case that the body which hovers above also has a body and sensory experiences? Microtubular information in the air doesn’t a physical person make. And without a physical body, there are no sensory experiences or anything else for that matter. Thus this is like claiming that if you turn the computer off and then smash it up so violently that its material structure shatters into dust, then the “information” inside would still be intact and would simply float in the air above it. In other words, the soul of the computer would still exist. Unless Hameroff is simply telling us about what he thinks people imagine (or hallucinate) when they’re having a NDE. Though if that’s the case, why all this stuff about microtubular information leaking into the air or even into the universe?

This spooky anti-reductionist motivation is further explained by the philosopher and materialist Patricia Churchland and also the philosopher Rick Grush. According to Blackmore,

“they suggest, it is because some people find the idea of explaining consciousness by neuronal activity somehow degrading or scary, whereas ‘explaining’ it by quantum effects retains some of the mystery”.

Churchland is even more dismissive when she says (as quoted by Blackmore):

“Quantum coherence in the microtubules is about as explanatorily powerful as pixie dust in the synapses.”

To put it more philosophically and simply, Penrose and Hameroff’s position appears to be a defence of traditional dualism. Or, at the very least, the belief in NDEs certainly backs up traditional dualism. And, as we’ve just seen, Hameroff has defended NDEs.

Dualism, Intuition and Free Will

Traditional philosophical dualism has just been mentioned. Here again we can tie Hameroff and Penrose to the concerns (or obsessions) of traditional philosophy. That is, Hameroff hints that his and Penrose’s positions may solve the traditional problems of free will, “the unitary sense of self” and the source and nature of intuition/insight. More specifically, all these philosophical conundrums can be explained by quantum coherence in the microtubules. In terms of simply-put examples, free will is down to quantum indeterminacy; non-locality is responsible for “the unity of consciousness”; and non-algorithmic processing is the baby of “quantum superposition”.

In the technical terms of mind-brain interaction, and as a result of accepting mind-body dualism, the brain and mind can be mutually involved in quantum “entanglement” which is “non-local”. Thus, put simply, we can have mind-to-brain causation. Though this would of course depend on seeing the mind as not being the brain or not even being physical (in a strict or even a non-strict sense). This would put both the mind and brain in the same holistic package and that would help all of us explain…. just about everything!

the user illusion

Exerpt from : Meme, Myself, I By Susan Blackmore

Heart of the selfplex
These vast memeplexes, with their varied means of propagation, form the very stuff of our lives. Yet there is one memeplex, perhaps the most powerful of all, that we readily overlook. That is our own familiar self. Like other animals, we have a body image--a plan of our body used for organising sensations and planning skilled actions. We also have, as some other animals do, the ability to recognise other individuals and understand that they, too, have desires and plans. So far so good--but now we add the capacity to imitate, the use of language and the word "I".


At first "I" may mean just "this body", but soon it begins to change. We say "I like ice cream", "I can't stand shopping malls", "I want to be famous", or "I believe in Father Christmas". And the "I" no longer refers just to a body, but to some imagined inner self that has intentions, possessions, fears, beliefs and aspirations.

This "I" forms the heart of the selfplex. And all the memes in your selfplex thrive because you work to defend them in arguments, to promote them in discussions, perhaps even to write about them in books and articles. In this way these self-related memes succeed where others fail, and so the selfplex grows.

Once the "self" has begun to form, it meets each new idea it comes across with "Yes, I agree with this" or "No, I don't like that". Although each self is unique in the body it describes as "mine", and in the ideas it picks up along the way, those ideas are all memes and the self offers them a safe haven.

I think modern neuroscience makes it clear that the self cannot be what it appears to be. We may feel as though we have a special little "me" inside, who has sensations and consciousness, who lives my life, and makes my decisions. Yet, this does not fit with what we know about the brain. Look inside a brain and what do you see? There is no central place into which all the impressions come and from where the orders go out. Rather, there is a massive processing system dealing with numerous things at once, only very few of which ever reach consciousness.

It may feel as though "my" consciousness starts the actions this body performs, but as Libet's experiments showed, conscious awareness takes about half a second to build up, far too long for it to initiate reactions to a fast changing world. And the brain is constantly being changed by everything that happens to it, so that "I" am not the same as I was ten years, or even a few moments, ago.

There is a long and venerable tradition of thinkers who have rejected the idea of a real and persistent self. The Buddha proclaimed that actions and their consequences exist, but that the person who acts does not. According to the Buddhist doctrine of anatta, the self is more like an ever-changing construction than a solid entity. The 18th-century philosopher David Hume likened the self to a bundle of sensations tied together by a common history.

Using more contemporary metaphors, Dennett argues that the brain builds multiple drafts of what is happening as information flows through its parallel networks. One of these drafts becomes the story we tell ourselves and includes the idea of an author of the story, or a user of the brain's virtual machine--consciousness is a "benign user illusion". So rather than being a permanent, persisting entity, the self may be more like a story about a self that does not really exist.

I believe these ideas have implications for the way we live. As society becomes more complex, and memes spread faster and farther, so our selves become more complicated. The unhappiness, desperation and psychological ill-health of many modern people may reflect the fact that increasing numbers of memes are using our poor over-stretched brains to construct a false self for their own propagation. Perhaps the user illusion is not so benign after all. Some would even say that belief in a permanent self is the cause of all human suffering--of fear, jealousy, hatred and unkindness.

But is it possible to live life without the illusion? One way might be to calm your mind. Techniques such as meditation, say, can still the memes that are constantly competing for your brain space, forcing you to keep thinking. Long traditions of training in meditation show this is possible: that years of practice can bring emptiness, compassion and clarity of mind. Meditation, at its simplest, consists of just sitting quietly and clearing the mind of all thoughts, and then, when more arise, just letting them go.

Meditation is itself a meme, but is, if you like, a meme-clearing meme. Its effect is not to obliterate all awareness, but rather to create an awareness that is more spacious and open, and seems, perhaps paradoxically, to be without a self who is experiencing it.

If this memetic analysis is correct, the choices you make are not made by an inner self who has free will, but are just the consequence of the replicators playing out their competition in a particular environment. In the process they create the illusion of a self who is in control.

Dawkins ends The Selfish Gene with his famous claim that: "We, alone on earth, can rebel against the tyranny of the selfish replicators". Yet, if we take his idea of memes seriously, and push it to its logical conclusion, we find that there is no one left to rebel.

SUSAN BLACKMORE is a lecturer in psychology at the University of the West of England, Bristol.

how the web became our external brain and what it means for these chirrens...,

wired |  Recently, my two-year-old nephew Benjamin came across a copy of Vanity Fair abandoned on the floor. His eyes scanned the glossy cover, which shone less fiercely than the iPad he is used to but had a faint luster of its own. I watched his pudgy thumb and index finger pinch together and spread apart on Bradley Cooper’s smiling mug. At last, Benjamin looked over at me, flummoxed and frustrated, as though to say, “This thing’s broken.”

Search YouTube for “baby” and “iPad” and you’ll find clips featuring one-year-olds attempting to manipulate magazine pages and television screens as though they were touch-sensitive displays. These children are one step away from assuming that such technology is a natural, spontaneous part of the material world. They’ll grow up thinking about the internet with the same nonchalance that I hold toward my toaster and teakettle. I can resist all I like, but for Benjamin’s generation resistance is moot. The revolution is already complete.

Technology Is Evolving Just Like Our DNA Does

With its theory of evolution, Charles Darwin’s The Origin of Species may have outlined, back in 1859, an idea that explains our children’s relationship with iPhones and Facebook. We are now witness to a new kind of evolution, one played out by our technologies. 

The “meme,” a term coined by evolutionary biologist Richard Dawkins in 1976, is an extension of Darwin’s Big Idea past the boundaries of genetics. A meme, put simply, is a cultural product that is copied. We humans are enamored of imitation and so become the ultimate “meme machines.” Memes—pieces of culture—copy themselves through history and enjoy a kind of evolution of their own, and they do so riding on the backs of successful genes: ours. 

According to the memeticist Susan Blackmore, just as Darwinism submits that genes good at replicating will naturally become the most prevalent, technologies with a knack for replication rise to dominance. These “temes,” as she’s called these new replicators, could be copied, varied, and selected as digital information—thus establishing a new evolutionary process (and one far speedier than our genetic model). Blackmore’s work offers a fascinating explanation for why each generation seems less capable of managing solitude, and less likely to opt for technological disengagement. 

always after the fact...,

Wikipedia | Libet's experiments suggest that unconscious processes in the brain are the true initiator of volitional acts, and free will therefore plays no part in their initiation. If the brain has already taken steps to initiate an action before we are aware of any desire to perform it, the causal role of consciousness in volition is all but eliminated.

Libet finds that conscious volition is exercised in the form of 'the power of veto' (sometimes called free won't); the idea that conscious acquiescence is required to allow the unconscious buildup of the readiness potential to be actualized as a movement. While consciousness plays no part in the instigation of volitional acts, Libet suggested that it may still have a part to play in suppressing or withholding certain acts instigated by the unconscious. Libet noted that everyone has experienced the withholding from performing an unconscious urge. Since the subjective experience of the conscious will to act preceded the action by only 200 milliseconds, this leaves consciousness only 100-150 milliseconds to veto an action (this is because the final 50 milliseconds prior to an act are occupied by the activation of the spinal motor neurones by the primary motor cortex, and the margin of error indicated by tests utilizing the oscillator must also be considered).

Susan Blackmore's common sense interpretation is "that conscious experience takes some time to build up and is much too slow to be responsible for making things happen."[6]

Libet's experiments have received support from other research related to the Neuroscience of free will.

Video - Benjamin Libet tells us what free will is...

evolution's third replicator?

New Scientist | Last year Google announced that the web had passed the trillion mark, with more than 1,000,000,000,000 unique URLs. Many countries now have nearly as many computers as people, and if you count phones and other connected gadgets they far outnumber people. Even if we all spent all day reading this stuff it would expand faster than we could keep up.

Billions of years ago, free-living bacteria are thought to have become incorporated into living cells as energy-providing mitochondria. Both sides benefited from the deal. Perhaps the same is happening to us now. The growing web of machines we let loose needs us to run the power stations, build the factories that make the computers, and repair things when they go wrong - and will do for some time yet. In return we get entertainment, tedious tasks done for us, facts at the click of a mouse and as much communication as we can ask for. It's a deal we are not likely to turn down.

Yet this shift to a new replicator may be a dangerous tipping point. Our ancestors could have killed themselves off with their large brains and dangerous memes, but they pulled through. This time the danger is to the whole planet. Gadgets like phones and PCs are already using 15 per cent of household power and rising (New Scientist, 23 May, p 17); the web is using over 5 per cent of the world's entire power and rising. We blame ourselves for climate change and resource depletion, but perhaps we should blame this new evolutionary process that is greedy, selfish and utterly blind to the consequences of its own expansion. We at least have the advantage that we can understand what is happening. That must be the first step towards working out what, if anything, to do about it.

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Susan Blackmore is becoming more and more interesting with the passage of time.

Choices?

Susan Blackmore at TED;

"Cultural evolution is a dangerous child for every species to let loose on this planet. By the time you realize what's happening, it's too late to put it back into the box. We humans are the Earth's Pandoran species. Mimetics is founded on the principles of unversal Darwinism. His idea was so simple, and yet it explains all design in the universe. What Darwin said was something like this: if you have creatures that vary, and if there is a struggle for life such that nearly all of these species die, and if the very few that survive pass on to their offsprings whatever helped them survive, than these offsprings must be better adapted to these circumstances than their parents were. You just need those three principles: variation, selection and heredity. If you have those, you MUST get evolution, or "design out of chaos without the aid of mind". What's this to do with memes? Darwin didn't know about genes, but the principle of universal Darwinism is that everything that's copied with variation and selection will evolve. Information that's copied from person to person is information copied with variation and selection. That's a meme. A meme is not an idea, is "that which is imitated", information which is copied from person to person. If you copied an information from someone else, it's a meme. But why do they spread? They are copied if they can. Some because they're true, useful, beautiful. Some even if they're not. Here is a curious meme: you go to your hotel, check into your room, go to the bathroom, and what do you see? A folded end of the toilet paper. It's a meme that spread all over the world. What is that about? it's supposed to tell you that somebody cleaned the place. Think of it this way: imagine a world full of brains and memes using them (you and me) to propagate. Why is this important? it gives us a completely new wiew of what it means to be human. All these things that make us unique -- language etc -- are based on genes. But there are two replicators now on this planet: from the moment our ancestors began imitating, there was a new replicator, the meme, alongside the gene. And you get an arms race between the genes (which want a smaller, efficient brain) and the memes (which want a bigger brain). All other species on this planet are gene machines, we only are meme machines. We need a new word for technological memes, let's call them temes, because the processes are different. Our brains are becoming like temes, faster, etc. We are at this cusp now to have a third replicator in our planet. But it's dangerous: temes are selfish replicators, they use us to suck up more resources to produce more computers and more things. Don't think we created the Internet, that's how it seems to us. How to pull through? Two ways: one is that the temes turn us into teme-machines, with implants, merging of humans and machines, because we are self-replicators. The other: teme-machines will replicate by themselves. In that case, it would not matter if the planet would no longer be liveable for humans."

Interesting and paradoxical line of imitating (not thinking) considering the cultural evolutionary bottleneck in which we presently find ourselves.....,