Richard
Dawkins has said this:
If
the alternative that's being offered to what physicists now talk
about - a big bang, a spontaneous singularity which gave rise to the
origin of the universe - if the alternative to that is a divine
intelligence, a creator, which would have to have been complicated,
statistically improbable, the very kind of thing which scientific
theories such as Darwin's exists to explain, then immediately we see
that however difficult and apparently inadequate the theory of the
physicists is, the theory of the theologians - that the first course
was a complicated intelligence - is even more difficult to accept....
Complicated things come into the universe late, as a consequence of
slow, gradual, incremental steps. God, if he exists, would have to be
a very, very, very complicated thing indeed. So to postulate a God as
the beginning of the universe, as the answer to the riddle of the
first cause, is to shoot yourself in the conceptual foot because you
are immediately postulating something far far more complicated than
that which you are trying to explain.
Dawkins
tends to be a little wordy so let me simplify it: he is saying that
the explanation for any phenomenon should be less complicated than
the thing it tries to explain. Can I say that I find it humorous and
somewhat ironic that he would use so many words to explain how things
should have a simple explanation? Anyway... according to Dawkins,
God would necessarily be far more complicated than the universe and
so a Supreme Being as the First Cause is not a satisfactory
explanation for the universe. It's a stretch, I know, but he makes
this point frequently so he must think it's compelling.
Dawkins'
argument suffers from a flawed premise. What objective, testable,
scientific principle exists that requires a cause to be less
complicated than its effect? He is trying to make a logical argument
but it's more like philosophical “wishful thinking.” I utterly
reject the notion that an explanation must necessarily be less
complicated than what it explains. Such an idea runs contrary to
everything we observe.
Consider
a painting on a cave wall. How did the painting get there? It's not
rocket-science: someone must have painted it on the wall. But isn't a
human being more complicated than than the painting? So, according
to Dawkins' reasoning, a human painting a picture on the wall isn't a
satisfactory explanation.
Of
course, Dawkins is not so easily stymied. He's heard this rebuttal
before. He claims that the human who made the painting is, himself,
the product of simpler beginnings. Through a billions of years long
chain of events, the human has evolved from more primitive creatures,
which evolved from a single celled creature, which rose naturally
from non-living matter, which was fused together from simpler
elements, which ultimately came from hydrogen atoms in the big bang.
It's a sort of cosmic “butterfly effect” where an expanding cloud
of hydrogen in space becomes a painting on a cave wall. How
convenient.
The
death knell of Dawkins argument lies in our understanding of cause
and effect. We've learned that every phenomenon we've ever observed
must have sufficient cause to explain it. In every case, the cause
is not simpler than the effect but rather is always greater
than the effect. In other words, a big bad wolf cannot huff and puff
and blow a house down; it takes something like a hurricane or tornado
to blow a house down. A ship cannot float unless the weight of the
water it displaces weighs more than the ship itself. A bird
cannot fly unless the shape of its wings creates more lift under its wings than the bird weighs.
Now, no
system is perfectly efficient – there is always wasted energy. If
a little input could create a greater output, then something like
perpetual motion should be possible. It's not. The cause is always
greater than the effect. Always! Therefore, the universe could not
have come from nothing. Nothing
can only produce nothing. It could never produce something – not
even a single atom. The cause of all the matter and energy in the
universe must necessarily be something greater than all the matter
and energy in the universe.
Dawkins'
rhetoric is really nothing more than clever semantics. There is no
reason to expect the cause of the universe must be something less
complicated than the universe. The exact opposite is true. God
creating the universe is by far the most reasonable explanation.
2 comments:
I've read something similar to the quoted passage in one of Dawkins' books. My memory is a bit vague and general (hence the vague and general citation), but I'll give it a shot.
First, his point is that organized complexity is what we're trying to explain (complexity as such is cheap as rain; weirdly enough I find myself endorsing Dembski's distinction between mere complexity and "specified complexity" on this point). If your explanation is just as complex as the thing explained, but isn't going to be explained in its own turn, then why even bother? We can skip a step and just say that life, or the universe, or whatever "just happens to exist" without an explanation. An explanation more complex than the thing explained (e.g. Leonardo to explain the Mona Lisa is only satisfactory if you are eventually going to explain Leonardo himself in terms of simpler principles and causes.
Second, I think he may be conflating "simplicity" (explicable in few words) with "parsimony" (using, as much as possible, only causes known to exist, or, if positing unknown causes, keeping them as limited and similar to known causes as possible). An omnipotent, omniscient, omnibenevolent (not to mention unexplained) Being as about as un-parsimonious and extravagant an explanation as one could come up with, and should therefore should be a last resort in explanations.
I think your claim that "the cause is always greater than the effect" depends on the ambiguity of "greater" (e.g. treating "the amount of energy in an isolated system available for useful work" as equivalent to "the complexity of components in the isolated system" -- they are not the same thing). It's perfectly obvious that the overall entropy of a large isolated system can increase while local complexity and order increases in some parts of the system (that's why you can grow tomatoes and build working refrigerators). The Big Bang started from a state of minimum entropy and entropy -- on a cosmic scale -- has increased ever since although local reversals of this trend can and apparently have occurred.
Side note of dubious relevance: a wolf cannot blow a house down, but a bundle of dynamite smaller, less massive, and less structurally and chemically complex than the house, can do so. I'm not sure how this affects your analogy.
I beg to differ. God as an explanation is the MOST parsimonious explanation! Naturalistic explanations run into one problem after another, which require secondary and even sometimes tertiary ad hoc hypothesis to make the theories square with the data. (If I could, I would to create a physical representation of the naturalistic theory of origins that would clearly demonstrate how unwieldy this conceptual framework is, for all to see.) Use of Occam's razor is in order.
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