You
may not have been conscious of it, but big arguments have been
swirling around the issue of consciousness (for
the example that prompted this post see here).
Science had, then didn’t have and now again
has
big problems with consciousness. You know an argument is in trouble
when its starting point is the denial of probably the one thing we
are all aware of (at least when we are awake and healthy) – our
consciousness. Descartes was so sure of his that he based his philosophy on
it (the famous “I think [doubt] therefore I am”). But you might
be surprised to learn that for a good chunk of the 20th
century in science, a good chunk of scientists were convinced that
either it did it not exist or if it did, it didn’t “do”
anything. They were the behaviourists, represented by B.
F. Skinner (he of the infamous box).
Consciousness
was “nothing but” (ie reducible to) behaviour (by which they
primarily meant movement) or propensities to behave. Don’t feel any
need to understand any this (a notion which clearly assumes some
degree of consciousness on your part!), because such views didn’t
last long into the second half
of the twentieth century. Behaviourist schemes clearly didn’t work, and the
starting point was in any case fatally flawed.But
historically there had been an ongoing struggle to accommodate
subjective, first-person, mental states (consciousness) within a
thoroughly empirical (scientific) approach to our understanding of
ourselves. Those devoted to the nineteenth century theory/myth
of the conflict between science (good) and theology (bad), didn’t
want to provide any space for the immaterial (whether soul or mind –
for current purposes assume that both words name the same thing). But not
having a satisfying material explanation for what we are all most
aware of was a bit of a problem. If claiming that things like mental
states did not exist was not viable, what to do? Well, assuming
there was a thoroughly material explanation for our private interior
self (potentially another fatally flawed assumption), given the
powerful new tools of neuroscience such phenomena had to be
explicable in terms of what was going on in the brain (that clearly
material lump of stuff inside our heads). So there arose an empirical
subdiscipline within neuroscience, that of “consciousness studies”.
Writing
10 years ago in the inaugural editorial of the journal “Neuroscience of Consciousness” the
editors
credited a 1990 paper by Crick and Koch as marking “the rebirth of
consciousness science as a serious exercise”(Seth et al. 2015;
Crick and Koch 1990). The publication of the new journal reflected
“the maturity
of this rigorous and empirically grounded approach to the science of
subjective experience”. While they
themselves
made
no claim that this was necessarily the only available
approach
to subjective experience, such a claim had already appeared in Crick’s book, published the previous year
(Crick 1994). Crick
and Koch claimed
in their
paper
that “Everyone has a rough idea of what is meant by consciousness”
and
avoided
a “precise definition”. This, along with other knotty issues, was
left to one side “otherwise much time can be frittered away in
fruitless argument”, implicitly a criticism of what had gone
before. Philosophy (and certainly theology) had had its day. It was
now
over
to science to explain the previously inexplicable, even
consciousness
(see Chemero and Silberstein 2008). This particular body swerve would prove to be costly.
Now,
thirty five years on from the “rebirth of consciousness science”,
where stands the
project that had reached “maturity” ten years ago?
Franken and colleagues
recently published the
results of a survey of
consciousness researchers who attended two
consecutive annual
meetings
of the Association of the Scientific Study of Consciousness
(established in 1994
and later
the sponsor of Neuroscience of Consciousness) to
investigate “the
theoretical and methodological foundations, common assumptions, and
the current state of the field of consciousness research” (Francken
et al. 2022). Among the
issues they found “a lack of consensus
regarding the definition and most promising theory of consciousness”
and “that many views and opinions currently coexist in the
consciousness community. Moreover, individual respondents appear to
hold views that are not always completely consistent from a
theoretical point of view”. Lest
it be felt that this is
a rather slim basis on
which to form a view as
to the current state of the field, Seth and Bayne (2022) reported
in a recent extensive
review that “in the
case of consciousness, it is unclear how current theories relate to
each other, or whether they can be empirically
distinguished”. They
recommended “the
iterative development, testing and comparison of theories of
consciousness” . Franken
et al (2022) used ten different theoretical constructs in
their survey, Seth and Bayne (2022) identified a “selection” of
twenty-two “theories of consciousness” (see their Table 1) which
they grouped into four broad categories and Kuhn (limiting himself to
“materialism” theories) identified fourteen neurobiological
theories, to which he added lists of philosophical (N=12),
electromagnetic (7) and computational/informational (4) theories
(Kuhn 2024). Confused? Well, it turns out the field of consciousness studies is.
An
attempt to follow Seth
and Bayne’s advice, using a “large-scale adversarial
collaboration” to
experimentally compare predictions made by two of
the major competing
theories of consciousness (“global neuronal workspace theory”,
GNWT
vs “integrated informational theory”,
IIT)
recently reported results
in Nature (Ferrante et
al. 2025; see also the accompanying Nature Editorial). The
evidence that emerged partially
supported and partially challenged both theories. However, the
aftermath is more revealing. In
response to the
preprint and media coverage of
the paper (the actual
Nature paper was
submitted for publication in June
2023, accepted for publication in March 2025 and published
in April 2025)
a long list of
researchers (including
recognised leaders in neuroscience)
put their names to an
open letter on the
PsyArXiv preprint server condemning
the exercise as flawed,
calling IIT “pseudoscience” and objecting to its characterisation
as a leading candidate theory for explaining consciousness at all
(Fleming, et al. 2023). Proponents
of GNWT also called into question the discussion of the results and
the conclusions drawn (Naccache et al. 2025). All
of this suggests that
what flowed from Crick and Koch’s avoidance of a definition of
consciousness was basic
conceptual confusion. But
many had claimed that this was the problem at the time; this was
precisely the charge
made against the field by the philosopher Peter Hacker
not long after
its “rebirth” (Bennett
and Hacker 2003, 239–44; see also Hacker 2012).
Nobody is sure what it is they’re talking about, and even those who
do claim to know what they mean usually agree that the have no way of
measuring the “it” they are clear about. So the next time you
read a headline about “understanding” consciousness, just be
aware – we don’t.
It’s
not just the state
of the specific scientific
sub-field of consciousness
research that appears to have
problems and confusions.
Concerns
have emerged
from within the wider materialist camp.
Some more history is in
order. The philosopher Thomas
Nagel is perhaps best known
for his classic paper
“What is it like to be a bat?”; with
regard to the problem of consciousness, the
philosopher Patricia
Churchland called this paper a “watershed
articulation” (Nagel 1974; Churchland 1996).
The
problem which Nagel drew
attention to was
the one left by the demise of the behaviourists; the
“subjective character of experience” (the
what-is-it-like-to-be-ness)
was not captured “by any of the familiar, recently devised
reductive analyses of the mental”. Materialist
accounts of
thinking people left
something
vital out of the account. So
he
suggested that what was needed were new studies of the subjective and
the mental partially answered in subsequent
development
of consciousness
studies
described above.
But
that was then, what about now? Advances
in neuroscience have definitely
occurred.
With
all that we know now (all
those lovely coloured brain scans, snapshots of what
goes on while people think),
surely a thoroughly materialist
account of
us,
which leaves the concept of the immaterial (be
it mind or soul) lying redundant
in
its wake,
is possible? Or
at least given
such
progress,
we should
be
in a position to see
clearly
how in
principal it might be possible. Writing
in 2012, Nagel was, if anything, more concerned than
he was in the 70’s.
Consciousness
remained one of the major
sticking
points causing
his concern:
“The fundamental elements and laws of physics and chemistry have
been inferred to explain the behaviours of the inanimate world.
Something more is needed to explain how there can be conscious,
thinking creatures..” (Nagel 2012, 20).
And
yet his concerns went beyond the existence of (as yet unexplained)
consciousness to the wider materialist project: “The inadequacies
of the naturalistic and reductionist world picture seem to me to be
real”(Nagel 2012, 22). He
did not find theism (the “polar opposite” of materialism) “any
more credible than materialism as a comprehensive world view”, but
was having a problem trying
to imagine naturalistic accounts that were
able to accommodate
previously excluded elements like consciousness (or
purpose,
belief,
love and the like).
He
concluded
by accepting as
conceivable
that “the truth is beyond our reach, in virtue of our intrinsic
cognitive limitations” (Nagel 2012, 128). The
philosopher Mary Midgley
took
Nagel’s argument (along with those
made by others)
to provide evidence
that
the
“credo of materialism” was
“beginning
to fray around the edges” (Midgley 2014, 14). Things
haven’t improved since.
Does
any of this matter? On one level, not really. You are still you, even
although there is no scientific explanation for you in material
terms. At least no one is now claiming that because of the lack of
that explanation “you” don’t exist. Fundamentally, of course, I
would be argue that science with its third-party, observational
statements, which necessarily leave out of the account things like
purpose, hope, love, agency and the like (ie things that really matter to us), can only ever provide a
partial account of what we are as “persons” (something most
scientist are clear about – usually). As Midgley and many others
have argued the argument that only science defines or explains
important stuff, including what we are as persons, is a monstrous
overreach. Such claims are still occasionally made, but this view too is “fraying”.
But
there are of course other sources of data, other (complimentary)
ways of reasoning, other views of who and what we are as persons (something I touched on previously). If
the materialist program is faltering, these need to be heard again.
Wonder what (the decidedly immaterial) God thinks?
[PS: I don't normally provide references to the literature in these posts, but as I happened to have them to hand, I thought it would be churlish not to....]
Bennett,
Maxwell R, and Peter Michael Stephan Hacker. 2003. Philosophical
Foundations of Neuroscience. Blackwell.
Chemero,
Anthony, and Michael Silberstein. 2008. “After the Philosophy of
Mind: Replacing Scholasticism with Science*.” Philosophy of
Science 75 (1): 1–27. JSTOR. https://doi.org/10.1086/587820.
Churchland,
Patricia S. 1996. “The Hornswoggle Problem.” Journal of
Consciousness Studies 3 (5–6): 402–8.
Crick,
F. H. C. 1994. The Astonishing Hypothesis: The Scientific Search
for the Soul. Macmillan.
Crick,
Francis, and Christof Koch. 1990. “Towards a Neurobiological Theory
of Consciousness.” 2 (263–275): 203.
Ferrante,
Oscar, Urszula Gorska-Klimowska, Simon Henin, et al. 2025.
“Adversarial Testing of Global Neuronal Workspace and Integrated
Information Theories of Consciousness.” Nature 642 (8066):
133–42. https://doi.org/10.1038/s41586-025-08888-1.
Fleming,
S.M, Chris D Frith, M Goodale, et al. 2023. “The Integrated
Information Theory of Consciousness as Pseudoscience.” Preprint,
PsyArXiv. https://doi.org/10.31234/osf.io/zsr78.
Francken,
Jolien C, Lola Beerendonk, Dylan Molenaar, et al. 2022. “An
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https://doi.org/10.1093/nc/niac011.
Hacker,
P. M. S. 2012. “The Sad and Sorry History of Consciousness: Being,
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149–68.
Kuhn,
Robert Lawrence. 2024. “A Landscape of Consciousness: Toward a
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Biophysics and Molecular Biology 190 (August): 28–169.
https://doi.org/10.1016/j.pbiomolbio.2023.12.003.
Midgley,
M. 2014. Are You an Illusion? Heretics (Durham, England).
Acumen. https://books.google.co.uk/books?id=6hHtnQEACAAJ.
Naccache,
Lionel, Claire Sergent, Stanislas Dehaene, Xia-Jing Wang, Michele
Farisco, and Jean-Pierre Changeux. 2025. “GNW Theoretical Framework
and the ‘Adversarial Testing of Global Neuronal Workspace and
Integrated Information Theories of Consciousness.’” Neuroscience
of Consciousness 2025 (1): niaf037.
https://doi.org/10.1093/nc/niaf037.
Nagel,
Thomas. 1974. “What Is It Like to Be a Bat?” The Philosophical
Review 83: 435–50.
Nagel,
Thomas. 2012. Mind and Cosmos: Why the Materialist Neo-Darwinian
Conception of Nature Is Almost Certainly False. Oxford University
Press.
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Anil K., and Tim Bayne. 2022. “Theories of Consciousness.” Nature
Reviews Neuroscience 23 (7): 439–52.
https://doi.org/10.1038/s41583-022-00587-4.
Seth,
Anil K., Biyu J. He, and Jakob Hohwy. 2015. “Editorial.”
Neuroscience of Consciousness 2015 (1): niv001.
https://doi.org/10.1093/nc/niv001