The full text of Alan Sokal's
article follows. The article tests the hypothesis that
"a leading North American
journal of cultural studies . . . would publish an article liberally salted
with nonsense if (a) it sounded good and (b) it flattered the editors'
ideological preconceptions."
The hypothesis was not disproved. One
is tempted to regard the whole affair as a sophomoric prank, were it not
for its frightening implications. Namely, that a silent tide of unreason
threatens to overwhelm our institutions of higher learning, and to dictate
from a pulpit of blind, intolerant, righteous ignorance what we may correctly
do, say and think.
Transgressing the Boundaries:
Towards a Transformative Hermeneutics of Quantum Gravity
TURKISH
TRANSLATION/TÜRKCE CEVIRI
Alan D.
Sokal
Department
of Physics
New York
University
4 Washington
Place
New York,
NY 10003 USA
Internet:
SOKAL@NYU.EDU
Telephone:
(212) 998-7729
Fax: (212)
995-4016
November
28, 1994
revised
May 13, 1995
|
Biographical Information
The author is a Professor
of Physics at New York University. He has lectured widely in Europe and
Latin America, including at the Universit`a di Roma ``La Sapienza'' and,
during the Sandinista government, at the Universidad Nacional Aut'onoma
de Nicaragua. He is co-author with Roberto Fern'andez and Jürg Fröhlich
of Random Walks, Critical Phenomena, and Triviality in Quantum Field Theory
(Springer, 1992).
Transgressing disciplinary
boundaries ... [is] a subversive undertaking since it is likely to violate
the sanctuaries of accepted ways of perceiving. Among the most fortified
boundaries have been those between the natural sciences and the humanities.
— Valerie Greenberg, Transgressive
Readings (1990, 1)
The struggle for the transformation
of ideology into critical science ... proceeds on the foundation that the
critique of all presuppositions of science and ideology must be the only
absolute principle of science.
— Stanley Aronowitz, Science as
Power (1988b, 339)
There are many natural scientists, and
especially physicists, who continue to reject the notion that the disciplines
concerned with social and cultural criticism can have anything to contribute,
except perhaps peripherally, to their research. Still less are they receptive
to the idea that the very foundations of their worldview must be revised
or rebuilt in the light of such criticism. Rather, they cling to the dogma
imposed by the long post-Enlightenment hegemony over the Western intellectual
outlook, which can be summarized briefly as follows: that there exists
an external world, whose properties are independent of any individual human
being and indeed of humanity as a whole; that these properties are encoded
in ‘‘eternal’’ physical laws; and that human beings can obtain reliable,
albeit imperfect and tentative, knowledge of these laws by hewing to the
‘‘objective’’ procedures and epistemological strictures prescribed by the
(so-called) scientific method.
But deep conceptual shifts within
twentieth-century science have undermined this Cartesian-Newtonian metaphysics1;
revisionist studies in the history and philosophy of science have cast
further doubt on its credibility2;
and, most recently, feminist and poststructuralist critiques have demystified
the substantive content of mainstream Western scientific practice, revealing
the ideology of domination concealed behind the façade of ‘‘objectivity’’.3
It has thus become increasingly apparent that physical ‘‘reality’’, no
less than social ‘‘reality’’, is at bottom a social and linguistic construct;
that scientific ‘‘knowledge", far from being objective, reflects and encodes
the dominant ideologies and power relations of the culture that produced
it; that the truth claims of science are inherently theory-laden and self-referential;
and consequently, that the discourse of the scientific community, for all
its undeniable value, cannot assert a privileged epistemological status
with respect to counter-hegemonic narratives emanating from dissident or
marginalized communities. These themes can be traced, despite some differences
of emphasis, in Aronowitz's analysis of the cultural fabric that produced
quantum mechanics4;
in Ross' discussion of oppositional discourses in post-quantum science5;
in Irigaray's and Hayles' exegeses of gender encoding in fluid mechanics6;
and in Harding's comprehensive critique of the gender ideology underlying
the natural sciences in general and physics in particular.7
Here my aim is to carry these deep
analyses one step farther, by taking account of recent developments in
quantum gravity: the emerging branch of physics in which Heisenberg's quantum
mechanics and Einstein's general relativity are at once synthesized and
superseded. In quantum gravity, as we shall see, the space-time manifold
ceases to exist as an objective physical reality; geometry becomes relational
and contextual; and the foundational conceptual categories of prior science
— among them, existence itself — become problematized and relativized.
This conceptual revolution, I will argue, has profound implications for
the content of a future postmodern and liberatory science.
My approach will be as follows: First
I will review very briefly some of the philosophical and ideological issues
raised by quantum mechanics and by classical general relativity. Next I
will sketch the outlines of the emerging theory of quantum gravity, and
discuss some of the conceptual issues it raises. Finally, I will comment
on the cultural and political implications of these scientific developments.
It should be emphasized that this article is of necessity tentative and
preliminary; I do not pretend to answer all of the questions that I raise.
My aim is, rather, to draw the attention of readers to these important
developments in physical science, and to sketch as best I can their philosophical
and political implications. I have endeavored here to keep mathematics
to a bare minimum; but I have taken care to provide references where interested
readers can find all requisite details.
Quantum
Mechanics: Uncertainty, Complementarity, Discontinuity and Interconnectedness
It is not my intention to enter here
into the extensive debate on the conceptual foundations of quantum mechanics.8
Suffice it to say that anyone who has seriously studied the equations of
quantum mechanics will assent to Heisenberg's measured (pardon the pun)
summary of his celebrated uncertainty principle:
We can no longer speak of
the behaviour of the particle independently of the process of observation.
As a final consequence, the natural laws formulated mathematically in quantum
theory no longer deal with the elementary particles themselves but with
our knowledge of them. Nor is it any longer possible to ask whether or
not these particles exist in space and time objectively ...
When we speak of the picture of nature
in the exact science of our age, we do not mean a picture of nature so
much as a picture of our relationships with nature. ... Science
no longer confronts nature as an objective observer, but sees itself as
an actor in this interplay between man [sic] and nature. The scientific
method of analysing, explaining and classifying has become conscious of
its limitations, which arise out of the fact that by its intervention science
alters and refashions the object of investigation. In other words, method
and object can no longer be separated.910
Along the same lines, Niels Bohr wrote:
An independent reality in
the ordinary physical sense can ... neither be ascribed to the phenomena
nor to the agencies of observation.11
Stanley Aronowitz has convincingly traced
this worldview to the crisis of liberal hegemony in Central Europe in the
years prior and subsequent to World War I.1213
A second important aspect of quantum
mechanics is its principle of complementarity or dialecticism.
Is light a particle or a wave? Complementarity ‘‘is the realization that
particle and wave behavior are mutually exclusive, yet that both are necessary
for a complete description of all phenomena.’’14
More generally, notes Heisenberg,
the different intuitive
pictures which we use to describe atomic systems, although fully adequate
for given experiments, are nevertheless mutually exclusive. Thus, for instance,
the Bohr atom can be described as a small-scale planetary system, having
a central atomic nucleus about which the external electrons revolve. For
other experiments, however, it might be more convenient to imagine that
the atomic nucleus is surrounded by a system of stationary waves whose
frequency is characteristic of the radiation emanating from the atom. Finally,
we can consider the atom chemically. ... Each picture is legitimate when
used in the right place, but the different pictures are contradictory and
therefore we call them mutually complementary.15
And once again Bohr:
A complete elucidation of
one and the same object may require diverse points of view which defy a
unique description. Indeed, strictly speaking, the conscious analysis of
any concept stands in a relation of exclusion to its immediate application.16
This foreshadowing of postmodernist
epistemology is by no means coincidental. The profound connections between
complementarity and deconstruction have recently been elucidated by Froula17
and Honner18,
and, in great depth, by Plotnitsky.192021
A third aspect of quantum physics
is discontinuity or rupture: as Bohr explained,
[the] essence [of the quantum
theory] may be expressed in the so-called quantum postulate, which attributes
to any atomic process an essential discontinuity, or rather individuality,
completely foreign to the classical theories and symbolized by Planck's
quantum of action.22
A half-century later, the expression
‘‘quantum leap’’ has so entered our everyday vocabulary that we are likely
to use it without any consciousness of its origins in physical theory.
Finally, Bell's theorem23
and its recent generalizations24
show that an act of observation here and now can affect not only the object
being observed — as Heisenberg told us — but also an object arbitrarily
far away (say, on Andromeda galaxy). This phenomenon — which Einstein
termed ‘‘spooky’’ — imposes a radical reevaluation of the traditional mechanistic
concepts of space, object and causality25,
and suggests an alternative worldview in which the universe is characterized
by interconnectedness and (w)holism: what physicist David Bohm has called
‘‘implicate order’’.26
New Age interpretations of these insights from quantum physics have often
gone overboard in unwarranted speculation, but the general soundness of
the argument is undeniable.27
In Bohr's words, ‘‘Planck's discovery of the elementary quantum of action
... revealed a feature of wholeness inherent in atomic physics,
going far beyond the ancient idea of the limited divisibility of matter.’’28
Hermeneutics
of Classical General Relativity
In the Newtonian mechanistic worldview,
space and time are distinct and absolute.29
In Einstein's special theory of relativity (1905), the distinction between
space and time dissolves: there is only a new unity, four-dimensional space-time,
and the observer's perception of ‘‘space’’ and ‘‘time’’ depends on her
state of motion.30
In Hermann Minkowski's famous words (1908):
Henceforth space by itself,
and time by itself, are doomed to fade away into mere shadows, and only
a kind of union of the two will preserve an independent reality.31
Nevertheless, the underlying geometry
of Minkowskian space-time remains absolute.32
It is in Einstein's general theory
of relativity (1915) that the radical conceptual break occurs: the space-time
geometry becomes contingent and dynamical, encoding in itself the gravitational
field. Mathematically, Einstein breaks with the tradition dating back to
Euclid (and which is inflicted on high-school students even today!), and
employs instead the non-Euclidean geometry developed by Riemann. Einstein's
equations are highly nonlinear, which is why traditionally-trained mathematicians
find them so difficult to solve.33
Newton's gravitational theory corresponds to the crude (and conceptually
misleading) truncation of Einstein's equations in which the nonlinearity
is simply ignored. Einstein's general relativity therefore subsumes all
the putative successes of Newton's theory, while going beyond Newton to
predict radically new phenomena that arise directly from the nonlinearity:
the bending of starlight by the sun, the precession of the perihelion of
Mercury, and the gravitational collapse of stars into black holes.
General relativity is so weird that
some of its consequences — deduced by impeccable mathematics, and increasingly
confirmed by astrophysical observation — read like science fiction. Black
holes are by now well known, and wormholes are beginning to make the charts.
Perhaps less familiar is Gödel's construction of an Einstein space-time
admitting closed timelike curves: that is, a universe in which it is possible
to travel into one's own past!34
Thus, general relativity forces upon
us radically new and counterintuitive notions of space, time and causality35363738;
so it is not surprising that it has had a profound impact not only on the
natural sciences but also on philosophy, literary criticism, and the human
sciences. For example, in a celebrated symposium three decades ago on Les
Langages Critiques et les Sciences de l'Homme, Jean Hyppolite raised
an incisive question about Jacques Derrida's theory of structure and sign
in scientific discourse:
When I take, for example,
the structure of certain algebraic constructions [ensembles], where is
the center? Is the center the knowledge of general rules which, after a
fashion, allow us to understand the interplay of the elements? Or is the
center certain elements which enjoy a particular privilege within the ensemble?
... With Einstein, for example, we see the end of a kind of privilege of
empiric evidence. And in that connection we see a constant appear, a constant
which is a combination of space-time, which does not belong to any of the
experimenters who live the experience, but which, in a way, dominates the
whole construct; and this notion of the constant — is this the center?39
Derrida's perceptive reply went to the
heart of classical general relativity:
The Einsteinian constant
is not a constant, is not a center. It is the very concept of variability
— it is, finally, the concept of the game. In other words, it is not the
concept of something — of a center starting from which an observer
could master the field — but the very concept of the game ...40
In mathematical terms, Derrida's observation
relates to the invariance of the Einstein field equation
under nonlinear space-time diffeomorphisms (self-mappings of the space-time
manifold which are infinitely differentiable but not necessarily analytic).
The key point is that this invariance group ‘‘acts transitively’’: this
means that any space-time point, if it exists at all, can be transformed
into any other. In this way the infinite-dimensional invariance group erodes
the distinction between observer and observed; the
of Euclid and the G of Newton, formerly thought to be constant and
universal, are now perceived in their ineluctable historicity; and the
putative observer becomes fatally de-centered, disconnected from any epistemic
link to a space-time point that can no longer be defined by geometry alone.
Quantum
Gravity: String, Weave or Morphogenetic Field?
However, this interpretation, while
adequate within classical general relativity, becomes incomplete within
the emerging postmodern view of quantum gravity. When even the gravitational
field — geometry incarnate — becomes a non-commuting (and hence nonlinear)
operator, how can the classical interpretation of
as a geometric entity be sustained? Now not only the observer, but the
very concept of geometry, becomes relational and contextual.
The synthesis of quantum theory and
general relativity is thus the central unsolved problem of theoretical
physics41;
no one today can predict with confidence what will be the language and
ontology, much less the content, of this synthesis, when and if it comes.
It is, nevertheless, useful to examine historically the metaphors and imagery
that theoretical physicists have employed in their attempts to understand
quantum gravity.
The earliest attempts — dating back
to the early 1960's — to visualize geometry on the Planck scale (about
centimeters) portrayed it as ‘‘space-time foam’’: bubbles of space-time
curvature, sharing a complex and ever-changing topology of interconnections.42
But physicists were unable to carry this approach farther, perhaps due
to the inadequate development at that time of topology and manifold theory
(see below).
In the 1970's physicists tried an
even more conventional approach: simplify the Einstein equations by pretending
that they are almost linear, and then apply the standard methods
of quantum field theory to the thus-oversimplified equations. But this
method, too, failed: it turned out that Einstein's general relativity is,
in technical language, ‘‘perturbatively nonrenormalizable’’.43
This means that the strong nonlinearities of Einstein's general relativity
are intrinsic to the theory; any attempt to pretend that the nonlinearities
are weak is simply self-contradictory. (This is not surprising: the almost-linear
approach destroys the most characteristic features of general relativity,
such as black holes.)
In the 1980's a very different approach,
known as string theory, became popular: here the fundamental constituents
of matter are not point-like particles but rather tiny (Planck-scale) closed
and open strings.44
In this theory, the space-time manifold does not exist as an objective
physical reality; rather, space-time is a derived concept, an approximation
valid only on large length scales (where ‘‘large’’ means ‘‘much larger
than
centimeters’’!). For a while many enthusiasts of string theory thought
they were closing in on a Theory of Everything — modesty is not one of
their virtues — and some still think so. But the mathematical difficulties
in string theory are formidable, and it is far from clear that they will
be resolved any time soon.
More recently, a small group of physicists
has returned to the full nonlinearities of Einstein's general relativity,
and — using a new mathematical symbolism invented by Abhay Ashtekar — they
have attempted to visualize the structure of the corresponding quantum
theory.45
The picture they obtain is intriguing: As in string theory, the space-time
manifold is only an approximation valid at large distances, not an objective
reality. At small (Planck-scale) distances, the geometry of space-time
is a weave: a complex interconnection of threads.
Finally, an exciting proposal has
been taking shape over the past few years in the hands of an interdisciplinary
collaboration of mathematicians, astrophysicists and biologists: this is
the theory of the morphogenetic field.46
Since the mid-1980's evidence has been accumulating that this field, first
conceptualized by developmental biologists47,
is in fact closely linked to the quantum gravitational field48:
(a) it pervades all space; (b) it interacts with all matter and energy,
irrespective of whether or not that matter/energy is magnetically charged;
and, most significantly, (c) it is what is known mathematically as a ‘‘symmetric
second-rank tensor’’. All three properties are characteristic of gravity;
and it was proven some years ago that the only self-consistent nonlinear
theory of a symmetric second-rank tensor field is, at least at low energies,
precisely Einstein's general relativity.49
Thus, if the evidence for (a), (b) and (c) holds up, we can infer that
the morphogenetic field is the quantum counterpart of Einstein's gravitational
field. Until recently this theory has been ignored or even scorned by the
high-energy-physics establishment, who have traditionally resented the
encroachment of biologists (not to mention humanists) on their ‘‘turf’’.50
However, some theoretical physicists have recently begun to give this theory
a second look, and there are good prospects for progress in the near future.51
It is still too soon to say whether
string theory, the space-time weave or morphogenetic fields will be confirmed
in the laboratory: the experiments are not easy to perform. But it is intriguing
that all three theories have similar conceptual characteristics: strong
nonlinearity, subjective space-time, inexorable flux, and a stress on the
topology of interconnectedness.
Differential
Topology and Homology
Unbeknownst to most outsiders, theoretical
physics underwent a significant transformation — albeit not yet a true
Kuhnian paradigm shift — in the 1970's and 80's: the traditional tools
of mathematical physics (real and complex analysis), which deal with the
space-time manifold only locally, were supplemented by topological approaches
(more precisely, methods from differential topology52)
that account for the global (holistic) structure of the universe. This
trend was seen in the analysis of anomalies in gauge theories53;
in the theory of vortex-mediated phase transitions54;
and in string and superstring theories.55
Numerous books and review articles on ‘‘topology for physicists’’ were
published during these years.56
At about the same time, in the social
and psychological sciences Jacques Lacan pointed out the key role played
by differential topology:
This diagram [the Möbius
strip] can be considered the basis of a sort of essential inscription at
the origin, in the knot which constitutes the subject. This goes much further
than you may think at first, because you can search for the sort of surface
able to receive such inscriptions. You can perhaps see that the sphere,
that old symbol for totality, is unsuitable. A torus, a Klein bottle, a
cross-cut surface, are able to receive such a cut. And this diversity is
very important as it explains many things about the structure of mental
disease. If one can symbolize the subject by this fundamental cut, in the
same way one can show that a cut on a torus corresponds to the neurotic
subject, and on a cross-cut surface to another sort of mental disease.5758
As Althusser rightly commented, ‘‘Lacan
finally gives Freud's thinking the scientific concepts that it requires’’.59
More recently, Lacan's topologie du sujet has been applied fruitfully
to cinema criticism60
and to the psychoanalysis of AIDS.61
In mathematical terms, Lacan is here pointing out that the first homology
group62
of the sphere is trivial, while those of the other surfaces are profound;
and this homology is linked with the connectedness or disconnectedness
of the surface after one or more cuts.63
Furthermore, as Lacan suspected, there is an intimate connection between
the external structure of the physical world and its inner psychological
representation qua knot theory: this hypothesis has recently been
confirmed by Witten's derivation of knot invariants (in particular the
Jones polynomial64)
from three-dimensional Chern-Simons quantum field theory.65
Analogous topological structures
arise in quantum gravity, but inasmuch as the manifolds involved are multidimensional
rather than two-dimensional, higher homology groups play a role as well.
These multidimensional manifolds are no longer amenable to visualization
in conventional three-dimensional Cartesian space: for example, the projective
space
, which arises from the ordinary 3-sphere by identification of antipodes,
would require a Euclidean embedding space of dimension at least 5. 66
Nevertheless, the higher homology groups can be perceived, at least approximately,
via a suitable multidimensional (nonlinear) logic.6768
Manifold
Theory: (W)holes and Boundaries
Luce Irigaray, in her famous article
‘‘Is the Subject of Science Sexed?’’, pointed out that
the mathematical sciences,
in the theory of wholes [théorie des ensembles], concern themselves
with closed and open spaces ... They concern themselves very little with
the question of the partially open, with wholes that are not clearly delineated
[ensembles flous], with any analysis of the problem of borders [bords]
...69
In 1982, when Irigaray's essay first
appeared, this was an incisive criticism: differential topology has traditionally
privileged the study of what are known technically as ‘‘manifolds without
boundary’’. However, in the past decade, under the impetus of the feminist
critique, some mathematicians have given renewed attention to the theory
of ‘‘manifolds with boundary’’ [Fr. variétés à bord].70
Perhaps not coincidentally, it is precisely these manifolds that arise
in the new physics of conformal field theory, superstring theory and quantum
gravity.
In string theory, the quantum-mechanical
amplitude for the interaction of n closed or open strings is represented
by a functional integral (basically, a sum) over fields living on a two-dimensional
manifold with boundary.71In
quantum gravity, we may expect that a similar representation will hold,
except that the two-dimensional manifold with boundary will be replaced
by a multidimensional one. Unfortunately, multidimensionality goes against
the grain of conventional linear mathematical thought, and despite a recent
broadening of attitudes (notably associated with the study of multidimensional
nonlinear phenomena in chaos theory), the theory of multidimensional manifolds
with boundary remains somewhat underdeveloped. Nevertheless, physicists'
work on the functional-integral approach to quantum gravity continues apace72,
and this work is likely to stimulate the attention of mathematicians.73
As Irigaray anticipated, an important
question in all of these theories is: Can the boundary be transgressed
(crossed), and if so, what happens then? Technically this is known as the
problem of ‘‘boundary conditions’’. At a purely mathematical level, the
most salient aspect of boundary conditions is the great diversity of possibilities:
for example, ‘‘free b.c.’’ (no obstacle to crossing), ‘‘reflecting b.c.’’
(specular reflection as in a mirror), ‘‘periodic b.c.’’ (re-entrance in
another part of the manifold), and ‘‘antiperiodic b.c.’’ (re-entrance with
twist). The question posed by physicists is: Of all these conceivable boundary
conditions, which ones actually occur in the representation of quantum
gravity? Or perhaps, do all of them occur simultaneously and on
an equal footing, as suggested by the complementarity principle?74
At this point my summary of developments
in physics must stop, for the simple reason that the answers to these questions
— if indeed they have univocal answers — are not yet known. In the remainder
of this essay, I propose to take as my starting point those features of
the theory of quantum gravity which are relatively well established
(at least by the standards of conventional science), and attempt to draw
out their philosophical and political implications.
Transgressing
the Boundaries: Towards a Liberatory Science
Over the past two decades there has
been extensive discussion among critical theorists with regard to the characteristics
of modernist versus postmodernist culture; and in recent years these dialogues
have begun to devote detailed attention to the specific problems posed
by the natural sciences.75
In particular, Madsen and Madsen have recently given a very clear summary
of the characteristics of modernist versus postmodernist science. They
posit two criteria for a postmodern science:
A simple criterion for science
to qualify as postmodern is that it be free from any dependence on the
concept of objective truth. By this criterion, for example, the complementarity
interpretation of quantum physics due to Niels Bohr and the Copenhagen
school is seen as postmodernist.76
Clearly, quantum gravity is in this
respect an archetypal postmodernist science. Secondly,
The other concept which
can be taken as being fundamental to postmodern science is that of essentiality.
Postmodern scientific theories are constructed from those theoretical elements
which are essential for the consistency and utility of the theory.77
Thus, quantities or objects which are
in principle unobservable — such as space-time points, exact particle positions,
or quarks and gluons — ought not to be introduced into the theory.78
While much of modern physics is excluded by this criterion, quantum gravity
again qualifies: in the passage from classical general relativity to the
quantized theory, space-time points (and indeed the space-time manifold
itself) have disappeared from the theory.
However, these criteria, admirable
as they are, are insufficient for a liberatory postmodern science:
they liberate human beings from the tyranny of ‘‘absolute truth’’ and ‘‘objective
reality’’, but not necessarily from the tyranny of other human beings.
In Andrew Ross' words, we need a science ‘‘that will be publicly answerable
and of some service to progressive interests.’’79
From a feminist standpoint, Kelly Oliver makes a similar argument:
... in order to be revolutionary,
feminist theory cannot claim to describe what exists, or, ‘‘natural facts.’’
Rather, feminist theories should be political tools, strategies for overcoming
oppression in specific concrete situations. The goal, then, of feminist
theory, should be to develop strategic theories — not true theories,
not false theories, but strategic theories.80
How, then, is this to be done?
In what follows, I would like to
discuss the outlines of a liberatory postmodern science on two levels:
first, with regard to general themes and attitudes; and second, with regard
to political goals and strategies.
One characteristic of the emerging
postmodern science is its stress on nonlinearity and discontinuity: this
is evident, for example, in chaos theory and the theory of phase transitions
as well as in quantum gravity.81
At the same time, feminist thinkers have pointed out the need for an adequate
analysis of fluidity, in particular turbulent fluidity.82
These two themes are not as contradictory as it might at first appear:
turbulence connects with strong nonlinearity, and smoothness/fluidity is
sometimes associated with discontinuity (e.g. in catastrophe theory83);
so a synthesis is by no means out of the question.
Secondly, the postmodern sciences
deconstruct and transcend the Cartesian metaphysical distinctions between
humankind and Nature, observer and observed, Subject and Object. Already
quantum mechanics, earlier in this century, shattered the ingenuous Newtonian
faith in an objective, pre-linguistic world of material objects ‘‘out there’’;
no longer could we ask, as Heisenberg put it, whether ‘‘particles exist
in space and time objectively’’. But Heisenberg's formulation still presupposes
the objective existence of space and time as the neutral, unproblematic
arena in which quantized particle-waves interact (albeit indeterministically);
and it is precisely this would-be arena that quantum gravity problematizes.
Just as quantum mechanics informs us that the position and momentum of
a particle are brought into being only by the act of observation, so quantum
gravity informs us that space and time themselves are contextual, their
meaning defined only relative to the mode of observation.84
Thirdly, the postmodern sciences
overthrow the static ontological categories and hierarchies characteristic
of modernist science. In place of atomism and reductionism, the new sciences
stress the dynamic web of relationships between the whole and the part;
in place of fixed individual essences (e.g. Newtonian particles), they
conceptualize interactions and flows (e.g. quantum fields). Intriguingly,
these homologous features arise in numerous seemingly disparate areas of
science, from quantum gravity to chaos theory to the biophysics of self-organizing
systems. In this way, the postmodern sciences appear to be converging on
a new epistemological paradigm, one that may be termed an ecological
perspective, broadly understood as ‘‘recogniz[ing] the fundamental interdependence
of all phenomena and the embeddedness of individuals and societies in the
cyclical patterns of nature.’’85
A fourth aspect of postmodern science
is its self-conscious stress on symbolism and representation. As Robert
Markley points out, the postmodern sciences are increasingly transgressing
disciplinary boundaries, taking on characteristics that had heretofore
been the province of the humanities:
Quantum physics, hadron
bootstrap theory, complex number theory, and chaos theory share the basic
assumption that reality cannot be described in linear terms, that nonlinear
— and unsolvable — equations are the only means possible to describe a
complex, chaotic, and non-deterministic reality. These postmodern theories
are — significantly — all metacritical in the sense that they foreground
themselves as metaphors rather than as ‘‘accurate’’ descriptions of reality.
In terms that are more familiar to literary theorists than to theoretical
physicists, we might say that these attempts by scientists to develop new
strategies of description represent notes towards a theory of theories,
of how representation — mathematical, experimental, and verbal — is inherently
complex and problematizing, not a solution but part of the semiotics of
investigating the universe.8687
From a different starting point, Aronowitz
likewise suggests that a liberatory science may arise from interdisciplinary
sharing of epistemologies:
... natural objects are
also socially constructed. It is not a question of whether these natural
objects, or, to be more precise, the objects of natural scientific knowledge,
exist independently of the act of knowing. This question is answered by
the assumption of ‘‘real’’ time as opposed to the presupposition, common
among neo-Kantians, that time always has a referent, that temporality is
therefore a relative, not an unconditioned, category. Surely, the earth
evolved long before life on earth. The question is whether objects of natural
scientific knowledge are constituted outside the social field. If this
is possible, we can assume that science or art may develop procedures that
effectively neutralize the effects emanating from the means by which we
produce knowledge/art. Performance art may be such an attempt.88
Finally, postmodern science provides
a powerful refutation of the authoritarianism and elitism inherent in traditional
science, as well as an empirical basis for a democratic approach to scientific
work. For, as Bohr noted, ‘‘a complete elucidation of one and the same
object may require diverse points of view which defy a unique description’’
— this is quite simply a fact about the world, much as the self-proclaimed
empiricists of modernist science might prefer to deny it. In such a situation,
how can a self-perpetuating secular priesthood of credentialed ‘‘scientists’’
purport to maintain a monopoly on the production of scientific knowledge?
(Let me emphasize that I am in no way opposed to specialized scientific
training; I object only when an elite caste seeks to impose its canon of
‘‘high science’’, with the aim of excluding a priori alternative
forms of scientific production by non-members.89)
The content and methodology of postmodern
science thus provide powerful intellectual support for the progressive
political project, understood in its broadest sense: the transgressing
of boundaries, the breaking down of barriers, the radical democratization
of all aspects of social, economic, political and cultural life.90
Conversely, one part of this project must involve the construction of a
new and truly progressive science that can serve the needs of such a democratized
society-to-be. As Markley observes, there seem to be two more-or-less mutually
exclusive choices available to the progressive community:
On the one hand, politically
progressive scientists can try to recuperate existing practices for moral
values they uphold, arguing that their right-wing enemies are defacing
nature and that they, the counter-movement, have access to the truth. [But]
the state of the biosphere — air pollution, water pollution, disappearing
rain forests, thousands of species on the verge of extinction, large areas
of land burdened far beyond their carrying capacity, nuclear power plants,
nuclear weapons, clearcuts where there used to be forests, starvation,
malnutrition, disappearing wetlands, nonexistent grass lands, and a rash
of environmentally caused diseases — suggests that the realist dream of
scientific progress, of recapturing rather than revolutionizing existing
methodologies and technologies, is, at worst, irrelevant to a political
struggle that seeks something more than a reenactment of state socialism.91
The alternative is a profound reconception
of science as well as politics:
[T]he dialogical move towards
redefining systems, of seeing the world not only as an ecological whole
but as a set of competing systems — a world held together by the tensions
among various natural and human interests — offers the possibility of redefining
what science is and what it does, of restructuring deterministic schemes
of scientific education in favor of ongoing dialogues about how we intervene
in our environment.92
It goes without saying that postmodernist
science unequivocally favors the latter, deeper approach.
In addition to redefining the content
of science, it is imperative to restructure and redefine the institutional
loci in which scientific labor takes place — universities, government labs,
and corporations — and reframe the reward system that pushes scientists
to become, often against their own better instincts, the hired guns of
capitalists and the military. As Aronowitz has noted, ‘‘One third of the
11,000 physics graduate students in the United States are in the single
subfield of solid state physics, and all of them will be able to get jobs
in that subfield.’’93
By contrast, there are few jobs available in either quantum gravity or
environmental physics.
But all this is only a first step:
the fundamental goal of any emancipatory movement must be to demystify
and democratize the production of scientific knowledge, to break down the
artificial barriers that separate ‘‘scientists’’ from ‘‘the public’’. Realistically,
this task must start with the younger generation, through a profound reform
of the educational system.94
The teaching of science and mathematics must be purged of its authoritarian
and elitist characteristics95,
and the content of these subjects enriched by incorporating the insights
of the feminist96,
queer97,
multiculturalist98
and ecological99
critiques.
Finally, the content of any science
is profoundly constrained by the language within which its discourses are
formulated; and mainstream Western physical science has, since Galileo,
been formulated in the language of mathematics.100101
But whose mathematics? The question is a fundamental one, for, as
Aronowitz has observed, ‘‘neither logic nor mathematics escapes the `contamination'
of the social.’’102
And as feminist thinkers have repeatedly pointed out, in the present culture
this contamination is overwhelmingly capitalist, patriarchal and militaristic:
‘‘mathematics is portrayed as a woman whose nature desires to be the conquered
Other.’’103104
Thus, a liberatory science cannot be complete without a profound revision
of the canon of mathematics.105
As yet no such emancipatory mathematics exists, and we can only speculate
upon its eventual content. We can see hints of it in the multidimensional
and nonlinear logic of fuzzy systems theory106;
but this approach is still heavily marked by its origins in the crisis
of late-capitalist production relations.107
Catastrophe theory108,
with its dialectical emphases on smoothness/discontinuity and metamorphosis/unfolding,
will indubitably play a major role in the future mathematics; but much
theoretical work remains to be done before this approach can become a concrete
tool of progressive political praxis.109
Finally, chaos theory — which provides our deepest insights into the ubiquitous
yet mysterious phenomenon of nonlinearity — will be central to all future
mathematics. And yet, these images of the future mathematics must remain
but the haziest glimmer: for, alongside these three young branches in the
tree of science, there will arise new trunks and branches — entire new
theoretical frameworks — of which we, with our present ideological blinders,
cannot yet even conceive.
Acknowledgments
I wish to thank Giacomo Caracciolo,
Lucía Fernández-Santoro, Lia Gutiérrez and Elizabeth Meiklejohn for enjoyable
discussions which have contributed greatly to this article. Needless to
say, these people should not be assumed to be in total agreement with the
scientific and political views expressed here, nor are they responsible
for any errors or obscurities which may inadvertently remain.
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