In my
last post, I mentioned in passing that Creation.com has a list of
arguments
they believe creationists should not use. However, there is one
argument that I have frequently heard creationists use that I believe
should be added to that list. Curiously, groups like Creation.com
and Answers in Genesis use this argument themselves so I doubt I'll
see it added to the list very soon.
The
other argument which I believe is somewhat weak is the “designed
for life” argument. The idea is that our planet, indeed even the
entire universe including physical laws, seems perfectly “fine
tuned” to support life. If things were even a little different on
earth, life would not be possible. Such a delicate balance suggests
purpose in the creation and, thus, is evidence for design. This has
sometimes been called the “anthropic principle.” Proponents of
the anthropic principle cite examples like the abundance and
properties of liquid water, the earth's distance from the sun, the
unique mixture of gases in our atmosphere, and many, many others.
When I said there were “many, many other” examples, I'm not
exaggerating. Whole books have been written about the subject and
many of these books have been adapted to videos. It's obviously a
favorite tool for many creationists.
Let me
expound on one example of the anthropic principle just to be sure
everyone understands exactly what we're talking about. The human
body requires oxygen to survive. If there were not enough oxygen in
the atmosphere, we would quickly suffocate. However, if there were
too much oxygen, a flash of lightning would ignite the entire
planet's atmosphere. So the amount of oxygen in the atmosphere is
just right – not too much nor too little. It's “fine tuned” to
support life.
Before
I get into my problems with such an argument, let me clarify a couple
of points. First, “design” is evidence for a Designer. Things
that are complex, ordered, and have purpose suggest design. However,
“design” in general isn't what I'm talking about here. What I'm
questioning is the argument that the earth is uniquely designed to
support human life. Here's an analogy to show the difference:
Consider
paint on a floor. Because I can recognize design, I can immediately
recognize the difference between paint spilled on the floor and a
pattern painted on the floor. It doesn't matter that I didn't see
the floor being painted; I can still tell it was intentionally
painted. That's the design argument. However, suppose the design
included a floral pattern and, by happy coincidence, I like flowers
(this is an analogy – I'm truly indifferent to flowers). If I
liked flowers, I might be tempted to say the painter specifically
painted the pattern for my benefit. That's the anthropic principle.
The
fact of the matter is that my hypothetical painter chose the pattern
that pleased him. Likewise, God designed the universe in the way
that pleased Him. It also follows that God also designed us in the
way that pleased Him and so put everything together according to His
plan. If God had wanted an earth with 100% oxygen, He could have
made it that way. If God had intended us to live inside the sun, He
could have made it that way. If God had intended for us to live
without water, He could have made it that way. If God had intended
us to live on a barren rock where there was no water, no night, and
the temperature was a constant 500º, we would still be talking about
how the planet was remarkably designed to support life and if things
were just a little bit different, we couldn't exist.
Considering
the infinite number of ways that the universe could have been
designed, there's nothing especially remarkable about this design
except that this is what was pleasing to God. The Bible tells us
that God made the world for us (Genesis 1:28-29). It's no wonder
then that the earth should be well suited for us. No matter how
narrow the requirements necessary for life (food, water, oxygen,
warmth, etc), God would have still made the earth well suited for us.
According
to evolution, life adapts to its environment. On a planet like
earth, where temperatures range between (approximately) -60ºF and
125ºF, the only life you would ever expect to find is life that can
survive between -60ºF and 125ºF. If life existed on another planet
where the temperatures ranged between 500ºF and 700ºF, the only
life that could exist on that planet would be adapted to survive
temperature ranges between 500ºF and 700ºF. You see, it's not
that the planet is adapted to the life as much as the life is adapted
to the planet. If life exists in any environment, then that
environment will seem suited for that life.
An
often used analogy that demonstrates this is a puddle. A puddle
might believe that whatever hole it finds itself in is remarkably
well suited for the puddle. Every convex or concave surface of the
hole seems “fine tuned” to match the exact shape of the water
inside it! That sounds silly, doesn't it? That's because it is
silly. It's obviously the water that adapts to the shape of the
hole.
The
problem with this argument is that the creationist's explanation for
the “fine tuning” is no more compelling than the evolutionist's
explanation. When creationists talk about fine tuning, they sound to
me like the puddle marveling about its hole. I'm sure that's how the
argument sounds to many evolutionists as well.