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I Think Therefore I Am?

September 22, 2015 Leave a comment Go to comments

The only thing that can be verified 100% to exist is your own consciousness (“I think, therefore I am”) does this effect/change your own beliefs in any way and how so?

In a way it is true that our consciousness is the only thing that we can verify 100%, however, that way of looking at it may itself not be 100% verifiable. Since cognition is only one aspect of our consciousness, we don’t know if the way that ‘our’ consciousness seems to that part of ‘us’ is truly limited to personal experience or whether it is only the tip of the iceberg of consciousness.

The nature of consciousness may be such that it supplies a sense of limitation and personhood which is itself permeable under different states of consciousness. We may be able to use our consciousness to verify conditions beyond its own self-represented limits, and to do so without knowing how we are able to do it. If we imagine that our consciousness when we are awake is like one finger on a hand, there may be other ‘fingers’ parallel to our own which we might call our intuition or subconscious mind. All of the fingers could have different ways of relating to each other as separate pieces while at the same time all being part of the same ‘hand’ (or hand > arm >body).

With this in mind,  Descartes’ cogito “I think therefore I am” could be re-phrased in the negative to some extent. The thought that it is only “I” who is thinking may not be quite true, and all of our thoughts may be pieces to a larger puzzle which the “I” cannot recognize ordinarily. It still cannot be denied that there is a thought, or an experience of thinking, but it is not as undeniable that we are the “I” that “we” think we are.

The modern world view is, in many ways, the legacy of Cartesian doubt. Descartes has gotten a bad rap, ironically due in part to the success of his opening the door to purely materialistic science. Now, after 400 years of transforming the world with technology, it seems prehistoric to many to think in terms of a separate realm of thoughts which is not physical. Descartes does not have the opportunity to defend himself, so his view is an easy target – a straw man even. When we update the information that Descartes had, however, we might see that Cartesian skepticism can still be effective.

Some things which Descartes didn’t have to draw upon in constructing his view include:

1) Quantum Mechanics – QM shifted microphysics from a corpuscular model of atoms to one of quantitative abstractions. Philosophically, quantum theory is ambiguous in both its realism/anti-realism and nominalism/anti-nominalism. Realism starts from the assumption that there are things which exist independently of our awareness of them, while nominalism considers abstract entities to be unreal.

  • Because quantum theory is the base of our physics, and physics precedes our biology, quantum mechanics can be thought of as a realist view. Nature existed long before human consciousness did, and nature is composed of quantum functions. Quantum goes on within us and without us.
  • Because quantum has been interpreted as being at least partially dependent on acts of detection (e.g. “Experiment confirms quantum theory weirdness”), it can be considered an anti-realist view. Unlike classical objects, quantum phenomena are subject to states like entanglement and superposition, making them more like sensory events than projectiles. Many physicists have emphatically stated that the fabric of the universe is intrinsically participatory rather than strictly ‘real’.
  • Quantum theory is nominalist in the sense that it removes the expectation of purpose or meaning in arithmetic. “Shut up and calculate.” is a phrase* which illustrates the nominalist aspects of QM to me; the view is that it doesn’t matter whether these abstract entities are real or not, just so long as they work.
  • Quantum theory is anti-nominalist because it shares the Platonic view of a world which is made up of perfect essences – phenomena which are ideal rather than grossly material. The quantum realm is one which can be considered closer to Kant’s ‘noumena’ – the unexperienced truth behind all phenomenal experience. The twist in our modern view is that our fundamental abstractions have become anti-teleogical. Because quantum theory relies on probability to make up the world, instead of a soul as a ghost in the material machine, we have a machine of ghostly appearances without any ghost.

To some, these characteristics when taken together seem contradictory or incomprehensible…mindless mind-stuff or matterless matter. To others, the philosophical content of QM is irrelevant or merely counter-intuitive. What matters is that it makes accurate predictions, which makes makes it a pragmatic, empirical view of nature.

2) Information Theory and Computers

The advent of information processing would have given Descartes something to think about. Being neither mind nor matter, or both, the concept of ‘information’ is often considered a third substance or ‘neutral monism’. Is information real though, or is it the mind treating itself like matter?

Hardware/software relation
This metaphor gets used so often that it is now a cliche, but the underlying analogy has some truth. Hardware exists independently of all software, but the same software can be used to manipulate many different kinds of hardware. We could say that software is merely our use of hardware functions, or we could say that hardware is just nature’s software. Either way there is still no connection to sensory participation. Neither hardware nor software has any plausible support for qualia.

Absent qualia
Information, by virtue of its universality, has no sensory qualities or conscious intentions. It makes no difference whether a program is executed on an electronic computer or a mechanical computer of gears and springs, or a room full of people doing math with pencil and paper. Information reduces all descriptions of forms and functions to interchangeable bits, so the same information processes would have to be the same regardless of whether there were any emergent qualities associated with them. There is no place in math for emergent properties which are not mathematical. Instead of a ‘res cogitans’ grounded in mental experience, information theory amounts to a ‘res machina’…a realm of abstract causes and effects which is both unextended and uninhabited.

The receding horizon of strong AI
If Descartes were around today, he might notice that computer systems which have been developed to work like minds lack the aesthetic qualities of natural people. They make bizarre mistakes in communication which remind us that there is nobody there to understand or care about what is being communicated. Even though there have been improvements in the sophistication of ‘intelligent’ programs, we still seem to be no closer to producing a program which feels anything. To the contrary, when we engage with AI systems or even CGI games, there is an uncanny quality which indicates a sterile and unnatural emptiness.

Incompleteness, fractals, and entropy
Gödel’s incompleteness theorem formalized a paradox which underlies all formal systems – that there are always true statements which cannot be proved within that system. This introduces a kind of nominalism into logic – a reason to doubt that logical propositions can be complete and whole entities. Douglas Hofstadter wrote about strange loops as a possible source of consciousness, citing complexity of self-reference as a key to the self. Fractal mathematics were used to graphically illustrate some aspects of self-similarity or self-reference and some, like Wai H Tsang have proposed that the brain is a fractal.

The work of Turing, Boltzmann, and Shannon treat information in an anti-nominalist way. Abstract data units are considered to be real, with potentially measurable effects in physics via statistical mechanics and through the concept of entropy. The ‘It from Bit’ view described by Wheeler is an immaterialist view that might be summed up as “It computes, therefore it is.”

3) Simulation Triumphalism

When Walt Disney produced full length animated features, he employed the techniques of fine art realism to bring completely simulated worlds to life in movie theaters. For the first time, audiences experienced immersive fantasy which featured no ‘real’ actors or sets. Disney later extended his imaginary worlds across the Cartesian divide to become “real” places, physical parks which are constructed around imaginary themes, turning the tables on realism. In Disneyland, nature is made artificial and artifice is made natural. Audioanimatronic robots populate indoor ‘dark rides’ where time can seem to stop at midnight even in the middle of a Summer day.

Video games
The next step in the development of simulacra culture took us beyond Hollywood theatrics and naturalistic fantasy. Arcade games featured simulated environments which were graphically minimalist. The simulation was freed from having to be grounded in the real world at all and players could identify with avatars that were little more than a group of pixels.

Video, holographic, and VR technologies have set the stage for acceptance of two previously far-fetched possibilities.  The first possibility is that of building artificial worlds which are constructed of nothing but electronically rendered data. The second possibility is that the natural world is itself such an illusion or simulation. This echoes Eastern philosophical views of the world as illusion (maya) as well as being a self-reflexive pattern (Jeweled Net of Indra). Both of these are suggested by the title of the movie The Matrix, which asks whether being able to control someone’s experience of the world means that they can be controlled completely.

The Eastern and Western religious concepts overlap in their view of the world as a Matrix-like deception against a backdrop of eternal life. The Eastern view identifies self-awareness as the way to control our experience and transcend illusion, while the Abrahamic religions promise that remaining devoted to the principles laid down by God will reveal the true kingdom in the afterlife. The ancients saw the world as unreal because the true reality can only be God or universal consciousness. In modern simulation theories, everything is unreal except for the logic of the programs which are running to generate it all.

4) Relativity

Einstein’s Theory of Relativity went a long way toward mending the Cartesian split by showing how the description of the world changes depending upon the frame of reference. Previously fixed notions of space, time, mass, and energy were replaced by dynamic interactions between perspectives. The straight, uniform axes of x,y,z, and t  were traded for a ‘reference-mollusk’ with new constants, such as the spacetime interval and the speed of light (c). The familiar constants of Newtonian mechanics, and Cartesian coordinates were warped and animated against a tenseless, Non-Euclidean space with no preferred frame of reference.

Even before quantum mechanics introduced a universe built on participation, Relativity had punched a hole in the ”view from nowhere’ sense of objectivity which had been at the heart of the scientific method since the 17th century. Now the universe required us to pick a point within spacetime and a context of physical states to determine the appearance of ‘objective’ conditions. Descartes extended substance had become transparent in some sense, mimicking the plasticity and multiplicity of the subjective ‘thinking substance’.

5) Neuroscience

Descartes would have been interested to know that his hypothesis of the seat of consciousness being the pineal gland had been disproved. People have had their pineal glands surgically removed without losing consciousness or becoming zombies. The advent of MRI technology and other imaging also has given us a view of the brain as having no central place which acts as a miniature version of ourselves. There’s no homunculus in a theater looking out on a complete image stored within the brain. There is also no hint of dualism in the brain as far as a separation between how and where fantasy is processed. To the contrary, all of our waking experiences seamlessly fuse internal expectations with external stimuli.

Neuroscience has conclusively shattered our naive realism about how much control we have over our own mind. Benjamin Libet’s showed that by the time we think that we are making a decision, prior brain activity could be used to predict what the decision would be. With perceptual tests we have shown that our experience of the real world not only contains glaring blind spots and distortions but that those distortions are masked from our direct inspection. Perception is incomplete, however that is no reason to conclude that it is an illusion. We still cannot doubt the fact of perception, only that in a complex kind of perception that a human being has, there are opportunities for conflicts between levels.

Neuroscientific knowledge has also opened up new appreciation for the mystery of consciousness. Some doctors have studied Near Death Experiences and Reincarnation reports. Others have talked about their own experiences in terms which suggest a more mystical presence of universal consciousness than we have imagined. Slowly the old certainties about consciousness in medicine are being challenged.

6) Psychology

Psychology has developed a model of mental illness which is natural rather than supernatural. Conditions such as schizophrenia and even depression are diagnosed and treated as neurological disorders. The use of brain-change drugs, both medically and recreationally has given us new insights into the specificity of brain function. Modern psychology has questioned earlier ideas such as Freud’s Id, Ego, and Superego, and the monolithic “I” before that so that there are many neurochemical roles and systems which contribute to making “us”.

To Decartes’ Cogito, the contemporary psychologist might ask whether the I refers to the sense of an inner voice who is verbalizing the statement, or to the sense of identification with the meaning of the concept behind the words, etc.

In all of the excitement of mapping mental symptoms to brain states, some of the most interesting work in psychology have languished. William James, Carl Jung, Piaget, and others presented models of the psyche which were more sympathetic to views of consciousness as a continuum or spectrum of conscious states. By shifting the focus away from first hand accounts and toward medical observation, some have criticized the neuroscientific influence on psychology as a pseudoscience like phrenology. The most important part of the psyche is overlooked, and patients are reduced to sets of correctable symptoms.

7) Semiotics

Perhaps the most underappreciated contribution on this list is that of semioticians such as C.S. Peirce and de Saussure. Before electronic computing was even imagined, they had begun to formalize ideas about the relation between signs and what is signified. Instead of a substance dualism of mind and matter, semiotic theories introduced triadic formulations such as between signs, objects, and concepts.

Baudrillard wrote about levels of simulation or simulacra, in which a basic reality is first altered or degraded, then that alteration is masked, then finally separated from any reality whatsoever. Together, these notions of semiotic triads and levels of simulation can help guide us away from the insolubility of substance dualism. Reality can be understood as a signifying medium which spans mind-like media and matter-like media. Sense and sense-making can be reconciled without inverting it as disconnected ‘information’.

8) Positivism & Post-Modernism

The certainty which Descartes expressed as a thinker of thoughts can be seen to dissolve when considered in the light of 20th century critics. Heavily criticized by some, philosophers such as Wittgenstein, Derrida, and Rorty continue to be relevant to undermining the incorrigibility of consciousness. The Cogito can be deconstructed linguistically until it is meaningless or nothing but the product of the bias of language or culture. Under Wittgenstein’s Tractatus, the Cogito can be seen as a failure of philosophy’s purpose in clarifying facts, thereby deflating it to an empty affirmation of the unknowable. Since, in his words “Whereof one cannot speak, thereof one must be silent.” we may be compelled to eliminate it altogether.

What logical positivism and deconstructivism does with language to our idea of consciousness is like what neuroscience does through medicine; it demands that we question even the most basic identities and undermines our confidence in the impartiality of our thoughts. In a sense, it is an invitation for a cross-examination of ourselves as our own prosecution witness.

Wilfrid Sellars attack on the Myth of the Given sees statements such as the Cogito as forcing us to accept a contradiction where sense-datum (such as “I think”) are accepted as a priori facts, but justified beliefs (“therefore I am”) have to be acquired. How can consciousness be ‘given’ if understanding is not? This would seem to point to consciousness as a process rather than a state or property. This however, fails to account for lower levels of consciousness which might be responsible for even the micro level processing.

In my view , logic and language based arguments against the incorrigibility fail because they overlook their own false ‘given’, which is that symbols can literally signify reality. In fact, symbols have no authority or power to provide meaning, but instead act as a record for those who intend to preserve or communicate meaning.

An updated Cogito

“I think, therefore I am at least what a thinker thinks is a thinker.”

Rather than seeing Cartesian doubt as only a primitive beginning to science, I think it makes sense to try to pick up where he left off. By adding the puzzle pieces which have been acquired since then, we might find new respect for the approach. Relativism itself may be relative, so that we need not be compelled to deconstruct everything. We can consider that our sense of deconstruction and solipsism as absurd may be well founded, and that just because our personal intuition is often flawed does not mean that kneejerk counter-intuition is any better.

With that in mind, is the existence of the “I” really any more dubious than a quark or a rainbow? Does it serve us to insist upon rigid designations of ‘real’ vs ‘illusion’ in a universe which has demonstrated that its reality is more like illusion? At the same time, does it serve us to deny that all experiences are in some sense ‘real’, regardless of their being ineffable to us now?

*attributed to David Mermin, Richard Feynman, or Paul Dirac (depending on who you ask)

  1. September 26, 2015 at 9:24 pm

    Thought provoking
    the science geek

  2. October 1, 2015 at 1:07 pm

    A fascinating and impressive overview of “reality.” What astounds me most is your brevity and ability to process the very complex for the lay person. Consciousness, observation and perception, and reality are so dazzlingly complex that they confound my mind in a pleasing way. Thank you for your knowledge.

  1. November 15, 2015 at 4:44 pm
  2. November 15, 2015 at 4:46 pm

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