The debate between realism and anti-realism is, at least, a century old.
Does Science describe the real world - or are its theories true only
within a certain conceptual framework? Is science only instrumental or
empirically adequate or is there more to it than that?
The
current - mythological - image of scientific enquiry is as follows:
Without
resorting to reality, one can, given infinite time and resources,
produce all conceivable theories. One of these theories is bound to be
the "truth". To decide among them, scientists conduct experiments and
compare their results to predictions yielded by the theories. A theory
is falsified when one or more of its predictions fails. No amount of
positive results - i.e., outcomes that confirm the theory's predictions -
can "prove right" a theory. Theories can only be proven false by that
great arbiter, reality.
Jose Ortega y Gasset said (in an
unrelated exchange) that all ideas stem from pre-rational beliefs.
William James concurred by saying that accepting a truth often requires
an act of will which goes beyond facts and into the realm of feelings.
Maybe so, but there is little doubt today that beliefs are somehow
involved in the formation of many scientific ideas, if not of the very
endeavor of Science. After all, Science is a human activity and humans
always believe that things exist (=are true) or could be true.
A
distinction is traditionally made between believing in something's
existence, truth, value of appropriateness (this is the way that it
ought to be) - and believing that something. The latter is a
propositional attitude: we think that something, we wish that something,
we feel that something and we believe that something. Believing in A
and believing that A - are different.
It is reasonable to assume
that belief is a limited affair. Few of us would tend to believe in
contradictions and falsehoods. Catholic theologians talk about explicit
belief (in something which is known to the believer to be true) versus
implicit one (in the known consequences of something whose truth cannot
be known). Truly, we believe in the probability of something (we, thus,
express an opinion) - or in its certain existence (truth).
All
humans believe in the existence of connections or relationships between
things. This is not something which can be proven or proven false (to
use Popper's test). That things consistently follow each other does not
prove they are related in any objective, "real", manner - except in our
minds. This belief in some order (if we define order as permanent
relations between separate physical or abstract entities) permeates both
Science and Superstition. They both believe that there must be - and is
- a connection between things out there.
Science limits itself
and believes that only certain entities inter-relate within well defined
conceptual frames (called theories). Not everything has the potential
to connect to everything else. Entities are discriminated,
differentiated, classified and assimilated in worldviews in accordance
with the types of connections that they forge with each other.
Moreover,
Science believes that it has a set of very effective tools to diagnose,
distinguish, observe and describe these relationships. It proves its
point by issuing highly accurate predictions based on the relationships
discerned through the use of said tools. Science (mostly) claims that
these connections are "true" in the sense that they are certain - not
probable.
The cycle of formulation, prediction and falsification
(or proof) is the core of the human scientific activity. Alleged
connections that cannot be captured in these nets of reasoning are cast
out either as "hypothetical" or as "false". In other words: Science
defines "relations between entities" as "relations between entities
which have been established and tested using the scientific apparatus
and arsenal of tools". This, admittedly, is a very cyclical argument, as
close to tautology as it gets.
Superstition is a much simpler
matter: everything is connected to everything in ways unbeknown to us.
We can only witness the results of these subterranean currents and
deduce the existence of such currents from the observable flotsam. The
planets influence our lives, dry coffee sediments contain information
about the future, black cats portend disasters, certain dates are
propitious, certain numbers are to be avoided. The world is unsafe
because it can never be fathomed. But the fact that we - limited as we
are - cannot learn about a hidden connection - should not imply that it
does not exist.
Science believes in two categories of
relationships between entities (physical and abstract alike). The one is
the category of direct links - the other that of links through a third
entity. In the first case, A and B are seen to be directly related. In
the second case, there is no apparent link between A and B, but a third
entity, C could well provide such a connection (for instance, if A and B
are parts of C or are separately, but concurrently somehow influenced
by it).
Each of these two categories is divided to three
subcategories: causal relationships, functional relationships and
correlative relationship.
A and B will be said to be causally
related if A precedes B, B never occurs if A does not precede it and
always occurs after A occurs. To the discerning eye, this would seem to
be a relationship of correlation ("whenever A happens B happens") and
this is true. Causation is subsumed by a the 1.0 correlation
relationship category. In other words: it is a private case of the more
general case of correlation.
A and B are functionally related if B
can be predicted by assuming A but we have no way of establishing the
truth value of A. The latter is a postulate or axiom. The time dependent
Schrödinger Equation is a postulate (cannot be derived, it is only
reasonable). Still, it is the dynamic laws underlying wave mechanics, an
integral part of quantum mechanics, the most accurate scientific theory
that we have. An unproved, non-derivable equation is related
functionally to a host of exceedingly precise statements about the real
world (observed experimental results).
A and B are correlated if A
explains a considerable part of the existence or the nature of B. It is
then clear that A and B are related. Evolution has equipped us with
highly developed correlation mechanisms because they are efficient in
insuring survival. To see a tiger and to associate the awesome sight
with a sound is very useful.
Still, we cannot state with any
modicum of certainty that we possess all the conceivable tools for the
detection, description, analysis and utilization of relations between
entities. Put differently: we cannot say that there are no connections
that escape the tight nets that we cast in order to capture them. We
cannot, for instance, say with any degree of certainty that there are no
hyper-structures which would provide new, surprising insights into the
interconnectedness of objects in the real world or in our mind. We
cannot even say that the epistemological structures with which we were
endowed are final or satisfactory. We do not know enough about knowing.
Consider
the cases of Non-Aristotelian logic formalisms, Non-Euclidean
geometries, Newtonian Mechanics and non classical physical theories (the
relativity theories and, more so, quantum mechanics and its various
interpretations). All of them revealed to us connections which we could
not have imagined prior to their appearance. All of them created new
tools for the capture of interconnectivity and inter-relatedness. All of
them suggested one kind or the other of mental hyper-structures in
which new links between entities (hitherto considered disparate) could
be established.
So far, so good for superstitions. Today's
superstition could well become tomorrow's Science given the right
theoretical developments. The source of the clash lies elsewhere, in the
insistence of superstitions upon a causal relation.
The general
structure of a superstition is: A is caused by B. The causation
propagates through unknown (one or more) mechanisms. These mechanisms
are unidentified (empirically) or unidentifiable (in principle). For
instance, al the mechanisms of causal propagation which are somehow
connected to divine powers can never, in principle, be understood
(because the true nature of divinity is sealed to human understanding).
Thus,
superstitions incorporate mechanisms of action which are, either,
unknown to Science – or are impossible to know, as far as Science goes.
All the "action-at-a-distance" mechanisms are of the latter type
(unknowable). Parapsychological mechanisms are more of the first kind
(unknown).
The philosophical argument behind superstitions is
pretty straightforward and appealing. Perhaps this is the source of
their appeal. It goes as follows:
There is nothing that can be
thought of that is impossible (in all the Universes);
There is
nothing impossible (in all the Universes) that can be thought of;
Everything
that can be thought about – is, therefore, possible (somewhere in the
Universes);
Everything that is possible exists (somewhere in the
Universes).
If something can be thought of (=is possible) and is not
known (=proven or observed) yet - it is most probably due to the
shortcomings of Science and not because it does not exist.
Some
of these propositions can be easily attacked. For instance: we can think
about contradictions and falsehoods but (apart from a form of mental
representation) no one will claim that they exist in reality or that
they are possible. These statements, though, apply very well to
entities, the existence of which has yet to be disproved (=not known as
false, or whose truth value is uncertain) and to improbable (though
possible) things. It is in these formal logical niches that superstition
thrives.
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