First Mystery: The Universe Eschews Observation.
Remember that romantic shtick
we were all sold about the atomic world at school? That pretty picture of
electrons skipping merrily around a nucleus of protons and neutrons, like
children dancing round a maypole at a medieval village fête? Many of us are still
under the subconscious grip of this idea that the world somehow reassuringly
consists of “stuff,” despite the fact that talking this way has been
problematic for the best part of a century now. Physicists know this well.
Biologists know it less well, because they haven’t really had to deal with it
yet. The first blow to the idea–and it really was a body blow–came in 1927 with
Heisenberg’s Uncertainty Principle. This posits that we cannot know both the
position and the momentum of a subatomic entity with accuracy. Moreover, it’s
not just that the information is there, somehow, and we don’t have access to
it. If we take quantum mechanics as a statement about reality (which most physicists have long since done), in what is
called the Copenhagen Interpretation, we are coerced to the conclusion that
naïve realism is mythic. We can’t know the position and momentum of any system
of matter with accuracy, because there is no such determined state to be
measured.
At one stroke, this circumcised
the dream that we could ever have full knowledge of the world. Once, not so
long ago, it was believed that if we could only acquire sufficiently detailed information about a physical system–the
developing patterns of weather, for example–then we could in principle predict
the evolution of such patterns with 100% accuracy. Heisenberg pulled that rug, in
fact pulled it and substituted it with a kind of Arabian magic carpet. But it
was just the first of many rugs that would be pulled. Since that time, the
study of quantum physics has disclosed the world to be weirder and weirder,
invoking Haldane’s “the universe is not only stranger than we imagine, it is
stranger than we can imagine.” Influences travel backwards in time. Particles
disappear from one side of a barrier and reappear on the other side without
passing through. A single photon traverses two physically separated apertures
at the same time.. Once-associated particles mysteriously “communicate” with
each other regardless of the distance between them. We know these things, we have
all heard them. But we don’t really
digest them. The old stories are worn out in the telling. Atoms are an elf music
dervishing in hyperspace, no more substantial than the mischief of a smile.
But this raises a fierce
conundrum, because if the world we always assumed to be made of “stuff” is not
really stuff, then what is it? And what does this mean?
The fact is that the world
has vaporized from a solid object to a cobwebby abstraction. We all know that
it is experienced as solid–when we
stub our toes it hurts or when we vacuum the lounge and empty the bag it isn’t
cooksmoke from fairyland we pour into the trash–but it only seems this way
because we are not interrogating its reality base too intensely. These common
perceptions and experiences are too wrapped up in the tape loops of our monkey
survival programs to be an especially reliable measure of what goes on
independent of our consciousness…if indeed anything does.
The problem began in earnest
with Descartes and his division of reality into two substances, world stuff (res extensa) and mind stuff (res cogitans). The mind stuff, or
spirit, was restricted to a tiny portion in the brain, the pineal gland. For
Descartes, the soul rode the pineal gland like Paul Atreides straddled Shai Hulud in Frank
Herbert’s Dune. We all of us suffer
the long fallout from this way of thinking, whether we are aware of it or not. The
very idea that there are somehow two categories to discuss, which we call “mind”
and “matter” is in large portion traceable to Descartes’ questionable choice.
It really does begin to seem
as if the “world” we perceive with our animal senses is a kind of thin-slice
abstraction or narrowed beam of attention focused down on precisely those
behaviors of reality that were at least useful enough for us to know in our
canopy dwelling, fruit acquiring, survival-honed development. I am going to
refer to this version of the world, the abstraction that we perceive with our
senses and name reality, as the “neural
corridor.” Naïve realism would have it that the neural corridor is simply
reality, that there is a one to one mapping from what we sense of the world to
what is actually “out there.” But quantum physics is already sufficient to call
our bluff on this. We do not see objects disappear from one side of a wall and
reappear on the other side, nor do we as a matter of course experience
ourselves flowing backwards in time, so clearly there are forms of relationship
in existence that fail to show up inside the neural corridor, or are in some
sense excluded by our monkey physiology. And I really do mean this. It’s not
just a manner of speaking. The question of course becomes…just what is the world outside of our neural interpretation?
The question also becomes, how much of
reality is in fact captured by our human senses? And how much is left out?
We have seen the world
transformed from a kind of Newtonian machine to an abstract dance of phantasms.
The “solidity” of the world seems to dissolve away the deeper we probe into it,
and again this is no mere manner of speaking. An atom is found to be a
“probability field,” but what the bejeezus is that? No one prepared to be honest with themselves really knows.
Quantum physics is the most precise description of nature ever rendered, but
there’s a gotcha: it’s precise in the realm of the most abstruse mathematics
humans have derived; in other words, the precision exists at the ultimate pole
of abstraction.
This evaporation of the
world’s apparent solidity into a cloud of abstractions as we place any real
epistemic pressure upon it is a very intriguing thing. It is doubly intriguing
because the very things that materialism has held to be finally “unreal” or
derivative for the past few hundred years…feelings, consciousness, love,
intentionality, hopes, dreams, will, creative process, are scarcely any more
abstract than the goblin wraiths of the quantum realm, leading of course to the
suspicion that their marginalization was over zealous in the first place.
But I am going to float the
idea that what we see with respect to the quantum realm is really just one face
of a larger principle that I paraphrased with my opening remark: the universe eschews observation. Sufficiently
burned by the example of quantum mechanics, you would think we’d have learned
our lesson. Yet a biological example of this misplaced concreteness exists. Not
too long ago, the sequencing of the genome and the promise of gene therapy was
touted as the next great revolution. If we could only know all the base steps
in our DNA (somewhat akin to knowing all the particle positions in a
thundercloud) then we could predict all the ‘storms’ that our embryonic
development is prone to and treat them. Well it is now twenty years later, the
human genome has been sequenced, and you don’t hear much about gene therapy any
more, for good reason. It was expected that this heroic sequencing effort would
shed major light on the complex development of the human organism. In
particular that it would shed light on one of the deepest mysteries of biology:
how genetic structure relates to morphology,
the formative shapes of organisms in dimensional space, and their
development. It was commonly supposed that humans would be discovered to have
in excess of 100,000 genes in order to support this complexity. In fact, it
turns out we have a little more than 20,000, which is fewer than some varieties
of grape and about the same number as a simple species of roundworm, C.elegans.
Human beings love the idea
of closure, but there is something about the universe that seems to resist
closure, as if we aren’t really viewing it in the right way. What I propose to
suggest is that this is not just a one-off incidental observation, but a kind
of pattern, and the pattern becomes visible if we push against it in a certain
way. The universe is happy enough to be observed so long as the business of
examination does not wander too far from the monkey program, does not draw too
close to elucidating how the whole thing is sustained in existence. There’s a
sort of trick with mirrors involved. At the point where such an approach is
threatened, the universe begins to hide its face.
If we conduct this pursuit relentlessly, we find a threshold beyond
which the 'object' of our attention begins to resist all–inclusion, in other
words, knowledge concerning the world refuses to complete itself, as if to do
so is somehow paradoxical. The closer we come to the illusion of totality, the
faster a front of ever–escaping knowledge recedes from the observer. This claim
may seem extraordinary on first exposure, but I would suggest that this is
because we are not used to thinking of it this way, and that even certain quite
ordinary features of our daily experience fit the pattern. Impenetrability of
time, incomprehensible vastness of space and recession of galaxies, ever
smaller orders of subatomic particles, ever more elaborate behaviour of such
particles, elusiveness of consciousness to material observation, utter mystery
of birth and death, unexplainable phenomena (or even just the rumor of them), Uncertainty
Principle, influence of the observer, the existence of a dark body or
“unconscious” in our own psyche, etc. It’s as if each of these disparate things
are somehow symbols within the architecture of our perception for a greater and
more astonishing thing…that the universe refuses ultimate closure, full
transparent visibility, or final explanation. Perhaps even that it must enact such a refusal.
MARK SWEENEY, May 16th 2013
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