SR03. 11 June 1992.
Copyright © 1996 by Kevin Sharpe. All rights reserved.
In DNA to Dean: Essays in Honour of Arthur R. Peacocke, by Members of
the Society of Ordained Scientists (unpublished), pp. 186-202.
THEOLOGY AND SCIENCE AS DIFFERENT LEVELS OF A HIERARCHY:
A CAUTION[i]
by
Kevin J. Sharpe
ABSTRACT.
Relating theology and science often means taking them as levels of a hierarchy,
theology being higher than science. The same happens with God and the world. I
develop steps for implementing this model based on the need for the mutual
relevance of the two disciplines. Arthur Peacocke adds the idea that God
interacts with the world-as-a-whole similarly to how, in R. W. Sperry’s model,
the mind interacts with the brain. I raise questions about this and propose
that God is the world-as-a-whole that acts on the parts of the world.
KEY WORDS.
God-World Relation; Hierarchies of Levels; Holism; Arthur Peacocke;
Theology-Science Relation; Top-Down Causation.
A
common way for relating theology and scientific theories is to say they occupy
levels arranged in a hierarchy. This essay assesses the levels model,
especially noting its dangers. I suggest caution in using it to avoid
separating theology and science.
The
work of Arthur Peacocke is useful for bringing out my concerns. I also will
discuss his use of top-down causation in the God-world relation. A recent issue
of Zygon: Journal of Religion and Science featured Peacocke’s work, and
two issues earlier there were articles by two other scholars (John Polkinghorne
and R. W. Sperry) whose ideas are important to this discussion (Polkinghorne
1991, Sperry 1991, and the December 1991 issue of the journal). Polkinghorne
wants to understand how the different levels relate to each other, but “the
problems are mostly too hard for current knowledge” (Polkinghorne 1991, 222).
Despite knowing this, he and Peacocke are not cautious enough in their attempts
to relate the world and a higher-level God.
The
Levels Model
It
is only recently that science and religion has moved from an amateur pursuit to
being a self-reflective discipline. This change has lead to probing of the
relations between theology and scientific theory. It was popular to say they
are complementary or occupy different levels. Theology’s level is higher than
science’s, it was also thought, meaning theology must be consistent with but
say something science does not. These approaches now face scrutiny.
The
hierarchy of levels model comes from the idea that nature has different levels.
Harold Schilling made this approach clear in his 1973 book, The New
Consciousness in Science and Religion, though he is only one of many to do
so (Schilling 1973, 59-60). He says there are three key ideas about the
interior depths of matter. The first is of levels in the organization of the
physical world. That there are different structural hierarchies of various
levels is the second. Finally is the idea that the levels of a hierarchy are
partly independent of one another.
Later
in his book, Schilling applies the levels model to theology and science
(Schilling 1973, 243). He says they deal with different levels of reality, one
to do with ultimacy and the other with nature. Each has developed a language or
vocabulary that is inadequate for talking about the other’s reality. Scientific
language, for instance, refers to nature’s levels and cannot handle those of
ultimacy, including ideas about God. Religious language similarly cannot handle
physical ideas such as natural causes, the weather, or the brain.[ii]
I
call the idea of hierarchies of levels as Schilling describes it, the levels
model. I omit the word hierarchy because the idea of levels implies it, at
least locally. For if the (metaphorical) heights of the levels were not
different, we would not use the word level.
Mutual
Relevance and the Levels Model
Much
of my unease with the levels model has to do with relevance. I use the word in William
Austin’s senses of direct and quasi-direct relevance (Austin 1976).
A
collection of statements of one field has direct relevance to a statement in
another field if the collection or its negative implies the statement. An
example is the comparison between biology and the religious belief that all
people have descended from Adam and Eve. From biology, scientists conclude
there was no one couple from which humanity descends.
Austin’s
quasi-direct relevance of two theories means they offer alternative, apparently
competing, explanations of the same data. The theories could come from any
fields or from one. The competing explanations offered by Paley and Darwin for
the way organisms have adapted to their environments is an example Austin gives
of this type of relevance.
One
field is relevant to another, I would say, if the following applies. The data
each considers overlap and there are statements in the first field directly
relevant for statements in the second. Alternatively, the two fields have theories
with quasi-direct relevance for each other. The example from human evolution
given for direct relevance suggests science is relevant to theology. Theology
also may be relevant to science, in which case science and theology are
mutually relevant (Sharpe In Press 1).
I
believe science and theology are mutually relevant and we should actively
pursue this, following its implications. We should do this for humanity’s and
the environment’s health, perhaps survival - but I will not support this belief
here (see Sharpe 1984). From this perspective, the levels model has a problem.
(1)
The levels model for the science-theology relation does not address the
relevance question. So using it uncritically can lead to problems.
An
outline of a common use of the levels model may make this point clearer. Assume
science is at a lower level than is theology, and that science is relevant for
theology. For Ernan McMullin, this means making theology consonant with
scientific knowledge. To do this he makes theology a source for a broad
world-view that interprets scientific theories to make them “maximally
acceptable from the Christian standpoint” (McMullin 1981, 51).[iii] He supposes science does
not address meaning questions and that theology goes beyond it by, for example,
putting it in the context of ultimate meanings. Theology then becomes
consistent with science, but does not add to or challenge it. McMullin wants to
reduce conflict by creating a broader world of meaning in which the two can
relax in harmony.
McMullin
uses the levels model and avoids the mutual relevance of science and theology.
This is because the model leaves open whether or not theology should adapt its
content to the knowledge of the sciences. Neither does it address whether or
not science should take seriously the insights of theology. The traffic may
only be one way (science to theology) and then theology need not take it
seriously. Without clarifying these questions, the model is confusing. Should
theology and science be mutually relevant, or not? If they are mutually
relevant, should they act on the relevance? By not addressing these key
questions, it leads writers like McMullin to assume answers without carefully
thinking about their implications.
Using
the Levels Model Cautiously
The
levels model also can lead to further confusions, this time about the God-world
relation. I turn to causality. There may be causal relations between the levels
of a hierarchy within a theory. We instinctively assume a bottom-up causation
in such a hierarchy: the behavior of the parts of something largely determines
its behavior and properties. The problem is the reverse causation. How does the
higher level affect the lower? I want to focus on this causal relation between
entities within a theory, in particular between God and the world.
Before
continuing I need to clarify a point.
The
above examples apply the model to the sciences and to the theology-science
relation. Within their theological theories, theologians often also take God to
be on a higher level than is the world. This is a third use of the levels
model, namely within theology. There is a difference between hierarchies of
theories and hierarchies of entities within a theory.
There
is, however, an equivalence between the theory levels and the levels of theological
entities. On the theory side, theology’s level is usually higher than is
science’s. On the theological entity side, God’s level is usually higher than
is the world’s. The entity placements probably determine, if they are not
equivalent to, the theory placements. Since God is higher than the world, the
discipline whose subject is God is higher than disciplines whose subject is the
world. Further, the mutual relevance of theories about God and those about the
world is equivalent to theology and science being mutually relevant. Hence, I
will move between discussing theories and discussing entities without noting
the change.
Having
made this distinction, I return to the levels model and the causal relation of
a higher level on one lower than it. The points below form a chain that an
application of the model might follow to address relevance.
(2)
Theology should take science openly, making itself consistent with it.
An upper-level theory needs to take the content of those on the lower levels
seriously. This means theology take science openly, that theology respect the
range of science’s explanations, including its conservation laws. This is
consonance, not in the sense of creating a higher metaphysical level that holds
existing theology and science in a consistent framework (as in, for example,
McMullin’s proposal). Rather, it is making the content of theology consistent
with science. For instance, telling the story of creation needs to use the
theories and knowledge of modern cosmology. Theology takes into itself the
theories of science.
(3)
Theology should work out how God can act on and in the world consistent with
both its own theories and with those of science. When it does take science
openly, theology usually creates a hierarchy of levels where God is higher than
the world. It then tries to make sense of the two in this arrangement. This
process can soon run into a snag. In the above creation example, for instance,
theology says God did the creating, but cannot say how and when God did it. Did
God create the big bang?
Ideas
about the upper-level God reach a point where they make causal contact with
ideas about the lower-level world. When this happens, theologians need to work
out how the upper-level God can act on the lower levels of the world. This
action must be consistent with the established properties of both the lower
level and the upper level.
(4)
There must be problems with the explanatory power of science. The focus
of this activity is not all on the upper God-level. Any upper level has holistic
properties that go beyond those explained by the lower levels. Thus there must
be problems with the explanations of the lower level theories and these need
identifying.
The
difficulties may not appear when concentrating on a particular level of explanation
because each may look complete. The problems may emerge only on stepping back
to take a larger or more holistic view.
This
may not always be the case, though. Not all levels appear complete to
themselves. Several recent theoretical developments in cosmology arise from
continually asking the question, “Where does that come from?” Theories trace
the universe back to creation in the big bang that in turn comes from quantum
fluctuations in its own very early phases. These in turn depend on the laws of
physics or a primitive version of them. The origin of the laws is, on the other
hand, a matter over which cosmologists scratch their heads. It may lie beyond
explanation by science (see Halliwell 1991 and Sharpe n.d. 1). Perhaps
cosmology’s questions, while raised within its own level, find answers from a
higher level such as metaphysics.
Thus,
we should not generalize and draw a hard and fast boundary line over which
science may never step. In particular, a scientific discipline may appear
incomplete to itself and realize it needs higher-level ideas.
(5)
Theology should then work back into itself how God acts on and in the world.
The fourth step involves addressing these problems in science using the upper
level’s explanations. To do this may require the idea of God and the
theoretical tools developed in (3), but used in ways consistent with science.
Theologians are then fleshing out how God acts on and in the world. In the
cosmology example, theology may suggest God produces the laws of science, showing
specifically how they might come from a God understood to have certain
characteristics.
By
doing this, theologians bring theology to science, making the two interact with
and add to each other to form a more complete understanding.[iv] It is to make theology
relevant to science.
This
is a God-of-the-gaps position, but with a twist. Such positions usual involve
thinking of God’s intervening in the otherwise regular course of nature. One could
qualify “the regular course of nature” in this age of chaos and other
revolutionary theories, but I leave such matters aside. It is the idea of
intervention that I wish to discuss. The debates around the idea of God’s
breaking natural laws are old. Many people have pointed out that an
interventionist theology does not take seriously the scope and consistency of
scientific explanations. It also raises a larger problem for theology. If God
acts only by intervention, then God is distant from the world and ceases to be
an imminent sustainer.
I
conclude that intervention is not God’s primary way of interacting with the
world. The actions of God I am considering are not interventions; in a way they
add to the explanations of current science. So this is not the usual
God-of-the-gaps position.
Doing
theology this way makes it vulnerable. I believe theology should and does
change as science and human experience change, and so the theories it comes up
with may be wrong. It should not see itself as adding minor details to an
otherwise fixed set of dogmas. Rather, it should try to explain problems in
science and elsewhere. It can do this knowing that, because of Gödel’s and
others’ work, science will never explain everything.
Peacocke’s
Models
Peacocke
explicitly uses the levels model in his theology and science writing. His
recent book, Theology for a Scientific Age, is a good example. It is
interesting to observe him answering the above series of points about the model
without appearing conscious of a theoretical framework such as I have outlined.
He
initially follows the image Schilling uses of the world as a hierarchy of
levels. Different levels require different ideas; there are sciences peculiar
to each level. The explanations of higher levels do not reduce, he believes, to
those of lower levels. He also stresses that the structures and entities of the
world connect and relate with one another. He provides two examples of top-down
causation (the effect of higher levels on lower ones), something he believes
exists and is important (Peacocke 1990, 37-61).[v]
One
of the examples is the mind-brain relation, for which he draws on the work of
Sperry. He writes that the state of the brain-as-a-whole is a level that
controls what happens at the lower neuron level. There is, that is, a top-down
interaction - actual causal connections - between the total state of the brain
and the neurons. Sperry and Peacocke then say that mental events are
descriptions of total states of the brain. They are not events in the mind, a non-physical
something that is distinct from matter and interacts with the physical brain.
They refer to the brain-as-a-whole (Peacocke 1990, 60-61 and Sperry 1991,
243-46).
Having
discussed the levels model as applied to the world and holistic theories applied
to portions of it, Peacocke turns to theology. How might God act in the world
in the face of science’s ability, at least as commonly believed, to explain
most if not all phenomena? This is the causal joint problem. There are other
tools for responding to this problem besides calling upon intervention. A
particularly useful one is top-down causation. Peacocke speaks of top-down
causation from the higher-level God to the world and develops a model based on
the mind-brain relation. God’s level is one of personal agency and human
qualities. He sees God continuously influencing the world-as-a-whole in a
top-down way similar to how our thinking affects our bodies (Peacocke 1990,
161, and pp. 157-63, 210-11).
God
the highest level acts on the world-as-a-whole that then acts on the various
levels of the world down to its parts. I call it down-trickling providence.[vi] Note that Peacocke believes
we would not observe this divine “causative influence” as intervention or
interference in the regular course of nature (Peacocke 1990, 163).
A
further point is that top-down causation builds from the levels model. This is
because it needs to separate wholes from parts. There are phenomena or events
in the lower level of parts that its concepts cannot explain but those of the
higher holistic level can. The two models are, therefore, related but separate
assumptions.[vii]
Questions
for Peacocke’s Model
I
do not want to critique Peacocke’s theory in depth. My interest is in how it
uses the levels model and the types of problems that might follow.
First
I want to compare Peacocke’s theory with the above chain of points about the
levels model. As I think Peacocke would believe in the mutual relevance of
theology and science, the chain is necessary for his use of the levels model. I
note the following. His theology does take science openly. It does try to work
out how God can act on the world consistent with its own theories and those of
science. Perhaps its weakness comes in identifying where God acts on or in the
world. He may begin to falter in identifying problems in the explanatory power
of science. I will return to this.
There
is another series of points and questions of the models and analogy Peacocke
uses. They specifically look at the holistic top-down causation theory and the
down-trickling providence it implies. Looking at these is important because the
God-world relation it entails is Peacocke’s way of bridging the space between
the levels he suggests exist. It says how God will interact with the world and
hence how theology and science are mutually relevant.
(6)
God acts on the world-as-a-whole but the mind is the brain-as-a-whole.
Peacocke’s panentheism says God acts on the world-as-a-whole as opposed to
being the world-as-a-whole. This is different from the mind-brain case in which
the mind is the brain-as-a-whole. The analogy between the mind-brain and
God-world therefore breaks down here, significantly.
There
being another level to cross worsens the problem of how the higher-level God
can act on the lower-level world. Now Peacocke needs to explain not only how
the world-as-a-whole acts on its parts, but how God can act on the
world-as-a-whole. It also puts the actions of God one further step away from
being apparent to the lower levels. On the other hand, it helps Peacocke defend
God’s transcendence and protects him from pantheism.
(7)
The status of Sperry’s mind-brain model, and the certainty of its
theological adaptation. Does the neuroscience community accept the holistic
mind-brain model Peacocke presents? Does the theory have empirical support? If
so, how does consciousness or mind cause or control the brain events? What are
the details, scope and boundaries of its action? Have researchers found the
causal chain?[viii] I assume there are
satisfactory answers to these questions.
If
not and most of neuroscientists do not endorse Sperry’s model, it may lose its
importance for theology. By developing the neuroscience model into one for
theology, Peacocke is suggesting it has scientific support and is therefore a
serious contender for theology. I question this. We cannot import the certainty
of the existence of the holistic interaction with the analogy. Peacocke may
respond that it is still useful for theology even if neuroscience rejects it.
He is correct that theology may still consider it, but it is then a weaker
option. Part of its force for theology lies in its being a holistic interaction
seriously believed by a scientific discipline.
(8)
The theological model’s top-down causation and the analogy. Suppose we
follow Peacocke and say the affects of the brain on the neurons is specific,
demonstrable, indisputable. Can we say the same about the effects of God on the
world or the world on its parts? Theologians need to show that the effects of
God on the world-as-a-whole and it on its parts are specific, demonstrable, and
indisputable. They need to do this regardless of the status of Sperry’s model -
even if neuroscience supports its holistic effects. If they cannot, the analogy
is weaker still. The force of the model does not pass over with the analogy,
and neither does the reality of the holistic effects.
(9)
The reality of the theological model’s top-down causation. Point (8)
goes further and in doing so relates to (4) and (5). Suppose theology decides
to work with Sperry’s model as carried over by Peacocke. Then the questions I
asked above for the neuroscience model lead to similar questions for the
theological one. Does it have empirical support? How do God and the
world-as-a-whole cause the events in the world, what are the details, scope and
boundaries of their actions? How does God constrain or interact with the
world-as-a-whole and it constrain the parts of the world? Have researchers
found causal chains? What is the holistic interaction by which the whole works
on the parts?
One
might sum up these questions by asking where Peacocke’s model of down-trickling
providence suggests observing God’s action. There probably would be
considerable debate over both God’s action on the world-as-a-whole and it on
the parts of the world. Perhaps one solution is in the Gaia hypothesis where
the world has holistic influence on its parts.[ix]
Peacocke, on the other hand, says the effects of God on the world appear
minimal, barely noticeable. He believes the higher the level on the hierarchy,
the less noticeable will be its holistic effects on the lower.
Peacocke’s
claim that we should not expect to observe down-trickling providence raises
problems. For instance, it depends on what God is doing. If God is raising
Jesus from the dead, we would observe an intervention. If after prayer Marlene
recovers completely from a disease that has always been fatal, there is a break
in the regular course of nature. Perhaps Peacocke can give up these events as
miraculous. Perhaps for Peacocke Jesus did not physically rise from the dead -
a position that may follow from his idea of providence (see Nelson 1991, 522;
and Peacocke 1991, 537).
There
is a stronger instance of God’s providence. God is the origin and source for the
existence of everything, their sustainer moment by moment. Nothing could have
more of an effect.
This
is an important problem and points to a weakness in Peacocke’s model. If
theology wishes to be consistent in its picture of God, making God’s actions as
obvious as in theory they should be, then it needs to point out clearly the
actions of God. They must be obvious if theology is to present God as having a
marked effect on anybody’s life and on the world. This need is part of the
point made about the levels model. Theology should emphasize the mutual
relevance between itself and science, between God and world. For this to happen
something must obviously be the work of God and not come only under science.
(10)
The causal joint. The causal joint problem resurfaces with God’s
top-down causation. Peacocke feels he might sidestep it by suggesting, as does
Polkinghorne, that God uses information to influence events. This would replace
God’s directly changing events from what they would have been or influencing
chance results. The alternatives require energy transfer and break the
conservation laws of science - energy cannot come from nowhere. God’s sending
information and a unit of a lower level receiving and processing that
information does not require energy transfer.
On
the other hand, it does require the receiver to store, process and understand
the information. It then has to act on it. These require the receiver to use
extra energy. Thus, relying on information flow may not solve the causal joint
problem, as Peacocke acknowledges in a footnote (Peacocke 1990, 59-61, 164, 207
n. 62; see also Polkinghorne, e.g., 1991, 233). It further assumes the receiver
has the means to store, process and understand the information.
Paul
Davies questioned Basil Hiley over a similar matter, the quantum information
potential. This is the theory Hiley and David Bohm developed as an alternative
to the usual Copenhagen approach to quantum mechanics. The quantum information
potential is holistic and acts on objects such as electrons to make them behave
in peculiarly quantum ways (see Sharpe In Press 1). Davies asked where the
electron gets the energy from for its quantum behavior as informed by the
potential. In reply, Hiley suggests it comes from the energy of the background
vacuum (Davies and Brown 1986, 140). Would Peacocke suggest the extra energy
for God’s down-trickling providence comes from the same source? It could be
grasping at straws.
One
also should consider whether the system containing the causal joint is open or closed.
If it is open - as the brain probably is - then the conservation of energy does
not apply. The causal joint problem may not apply to that system.
An
Alternative to Peacocke’s Theory
If
theology and science are to be mutually relevant, Peacocke and other users of a
levels model should answer points (1) to (5) above. He also faces problems (6)
through (10) with his model based on Sperry’s.
Further,
Peacocke’s position does not do justice to a twin emphasis in the Christian
understanding of God. Not only is God at the top, being transcendent -
something the levels model speaks to. God is also at the bottom of the chains
of levels, or throughout the complex system of the world, by being immanent and
the sustainer. As the most elemental matter is the base for every object, so
God is the base for everything. As we partly understand anything by the way its
parts behave, so we partly understand anything by its being a product of God.
God is at the bottom and seeps back through to the top. These twin functions do
not fit the levels model with its God at the top or end of the hierarchy of
levels, totally transcending the world.[x]
An
alternative to Peacocke’s idea of God starts by accepting a levels model for
the world and not for the God-world relation. It takes from Sperry’s model the
idea that the mind is the brain-as-a-whole and says God is the
universe-as-a-whole. The whole that is God also acts on the parts of the
universe in a top-down holistic way. This speaks to God’s transcendence.
Since
the whole contains the parts and we normally think the world is
self-sufficient, performing its events without outside help, God is also the
doer of all events. All events are both natural and God at work. Everything is
in God. Thus, this model speaks to God’s bottom-up action (by God being the
doer of all events) - that is, God’s immanence - as much as God’s top-down
transcendent action.
The
model needs a metaphysical base to make it more useful. Then it needs to make
its sense of God’s transcendence as strong as that of the Judeo-Christian
tradition. There are also obvious questions to answer such as the problem of
evil and human freedom.[xi]
How
does this model handle the points and problems I raised above? Note that,
rather than having a God-world hierarchy of levels, it has a hierarchy of the
world-as-a-whole (that is, God) and the world. So while it does not use the
levels model in the same way, it could still have similar problems. Looking at
the first five points, one can see numbers (3), (4) and (5) are more pertinent.
(3)
Theology should work out how God can act on and in the world consistent with
both its own theories and with those of science. Saying God is the doer of
all events does not contradict any scientific laws or interfere with any of its
theories. Neither does it do so for theology since it already has the belief
that God is the sustainer. On the other hand, this emphasis highlights a
problem theology already has: how does the belief in God the sustainer relate
to those of free will and the existence of evil? When I say theology should
work out how God can act consistent with its own theories, I mean that the
parts of a developing theology need to be consistent. It is not a matter of
taking a fixed theology and adding new parts to it consistent with what was
there.
This
points to a result of this approach. If God is the sustainer, then the world
reflects the nature of God and we could examine it to see what God is like.
Traditional properties of and puzzles about God might not withstand this
scrutiny. I have written before on theodicy in the light of this process
(Sharpe In Press 2).
There
is a second way God works. The holistic interactions by which the
world-as-a-whole acts on the parts of the world are also God at work. This
follows from the definition of God. The question then is whether the
world-as-a-whole does interact holistically with parts of the world. At present
there are few such interactions in scientific theory, but they may become more
widespread. (See discussions on the wave function of the universe - that is,
applying quantum mechanics to the whole of the universe as in cosmology’s
deliberation of the very early universe - the anthropic principle, the Gaia
hypothesis, and so on.) Theologians may want to say more about how God the world-as-a-whole
interacts with the world, for instance by giving God personal properties. The
theology I envision, however, would only go further like this in ways
consistent with science.
There
is a third type of action by God that theology may seek: divine interventions.
I am cautious about this. The world described by actual and potential science
would have to allow for and support interventions if theology is to consider
them. Traditional ideas invoking intervention may be hypotheses, but they need
not be the results of the inquiry.
(4)
There must be problems with the explanatory power of science. Above I
suggested there are problems in cosmology - the origin of the basic laws of
nature, for instance - where theology may help. I have also applied this theological
approach to them in another publication (Sharpe n.d. 1). This is only one
problem where theology might help.
(5)
Theology should then work back into itself how God acts on and in the world.
The metaphysics I propose for developing the model of God as the
world-as-a-whole works well with the cosmology problem just mentioned. Since
these are extensive topics, I will not explain them further but refer to other
essays (Sharpe n.d. 1 and n.d. 2).
Continuing
with the questions I raised of Peacocke’s model, points (7), (9) and (10) are
pertinent.
(7)
The status of Sperry’s mind-brain model, and the certainty of its
theological adaptation. I have not based this theology on an analogy to
Sperry’s model so I am not trying to import its certainty. It may help, but
there are other holistic interaction models - Bohm and Hiley’s is one example -
that also may be useful. The holistic interactions of the world-as-a-whole that
we already know about may help as well. Theological adaptations of these models
become suggestions open to examination.
Note
that Sperry’s model especially suits Peacocke because it uses personal language
for the whole that carries over to personal language for God. While such
language may be proper for the whole that is God, there are reasons for using
it that do not depend on Sperry’s model. This is something I raise in my fuller
discussion of the model of God as the world-as-a-whole (Sharpe n.d. 2).
(9)
The reality of the theological model’s top-down causation. I asked where
Peacocke’s model of down-trickling providence might lead one to observe God’s
action. For the model I suggest, one need not look very far for God’s action as
every event is God at work. Second, a theology using holistic God-world
interactions should try to explain widespread experiences if God’s acts are to
be real for people. This is different from Peacocke’s theology of a
down-trickling providence one will probably not notice.
(10)
The causal joint. The holistic models of science should answer their
causal joint problems, perhaps by looking at whether the systems are open or
closed. These models may then become candidates for the God-world relation.
Thus
the God-world model I suggest as an alternative to Peacocke’s may answer the
problems raised above.
Conclusion
I
have urged caution over using the levels model for the science-theology
relation and for the God-world relation. That the levels model applies to the
natural world (including human beings) does not automatically mean it applies
to the other areas. If theologians do use it, they need to be clear about the
relations between the levels. They also should take care to insure the mutual
relevance of science and theology, God and world.
These
points about the levels model also may hold for its use beyond theology,
provided mutual relevance is important.
To
the levels model Peacocke adds his theory of top-down causation, creating the
idea of down-trickling providence. I have raised several questions about this
too.
I
do not want to lessen the value of Peacocke’s work on the God-world relation.
He makes important contributions in facing and trying to understand it for this
science-informed culture. I hope my reflections will help strengthen his work.
Notes
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AUTHOR’S FOOTNOTE. Kevin J. Sharpe is a professor in
the Graduate School of the Union Institute. His mailing address is 65 Hoit
Road, Concord, New Hampshire 03301, USA.
[i]I wish to express my thanks to Arthur Peacocke and to Niels Henrick Gregersen and the Aarhus Forum Teologi Naturvidenskab for discussions on this paper.
[ii]McDonald 1989 and 1990 offer an overview of the levels model and an examination of the Bube and MacKay versions of it. The complementarity model for relating science and theology also uses the levels idea; see MacKay 1958 and 1974, Reich 1990, and Sharpe 1991 and In Press 1.
[iii]Schilling 1973, 243-44 says something similar.
[iv]I have in mind the image of the ladder model for the science-theology relation, as I described in Sharpe 1984.
[v]Note also that top-down is not quite the right word because it implies a spatial hierarchy; other images may be better (Schilling talks of interior depths).
[vi]Note the name is down-trickling providence and not trickle-down. I do not want to prejudge the theory by possible comparisons with an economics theory.
[vii]Peacocke does not explicitly use the levels model for the world in his building of a God-world relation. There he might be thinking of the world as a complex not necessarily hierarchically ordered. He does, however, apply it to the relation itself and that is what is important for my discussion. Further, that he uses it for the world in the first part of his book would imply from consistency that he use it also for the world in his theology in the second and more constructive half of the book. His use of the model seems redundant otherwise.
[viii]See Nelson 1991, 522 for a similar point. Sperry reviews empirical support for his theory in Sperry 1991. Note also that I use the word causal here in a broad, nondeterministic sense.
[ix]In this reference to the Gaia hypothesis, the world is not necessarily a living being.
[x]I am also critical of this idea in Sharpe 1979, which discusses God’s absolute transcendence in Gordon Kaufman’s theology, and in Sharpe In Press 1, where I discuss Bohm’s theology.
[xi]See Sharpe n.d. 2 for elaboration of the model.