First of all,
thanks for reading my comments, which, due to my incompetence at
writing coherently, are not that readable. Second, yes, I did read
your speech. That's the least a fellow Lahori can do for another.
To
me, the matter of teaching theory of
evolution
in classrooms
in America is a trivial point. Scientific advancement does not rely
that much on what is being taught in schools. It's somewhat
independent of that. Had it been dependent on that factor, it
wouldn't have developed at the pace that it has developed on. If a
system tries to confine intellectual inquiry, inquisitive minds find
a way out to work the system in their benefit. In my mind, a perfect
education system provides the tools to build the machines, not the
machines themselves. If the case of not being taught is based on the
argument that it is just a theory and not a hard fact, it begs some
clarification that I also owe from my last comments.
When people hear the
word theory, they think "imperfect fact". That is not exactly true
when it comes to scientific theories. Let me explain the boundaries
of theory and fact in my mind.
1- A fact is a demonstrable and verifiable piece of data.
2- A theory is an interpretation of available data.
3- Once a theory is proven and verified, it becomes a fact.
4- A theory must agree with all the existing facts to be taken
seriously but it may or may not agree with all existing theories. It
can cancel or expand any existing theory.
Next, let me demonstrate the difference with a few examples.
Example 1:
1- Fact: When looking from a beach at a departing ship, the last
thing that you see is the ship's mast.
2- Theory: The earth is spherical. Which, when proven, became a fact
Example 2:
1- Fact: Apples fall down to the earth
2- Theory: Earth has gravity.
Example 3:
1- Fact: When alpha particles strike a gold foil, some of them pass
thru, while other gets deflected.
2-
Theory: Atoms have a lot of empty space in them. The particles that
go thru, find that empty space in their paths. Some particles strike
the nucleus and due to the positive charge in it get deflected.
3- The
fact debunked the existing theory at that time (known as "Plum
Pudding Atomic Model") that atoms are filled with positive charged
material with electrons embedded in that material. In that case, all
of the alpha particles should bounce back. (Similar charges repel)
Example 4:
1- Fact 1: Wavelengths increase if the distance of emitter and
observer is increasing (due to the movement of either emitter or
observer) and decrease if the distance is decreasing (Doppler
Effect)
2- Fact
2: Wavelengths of lights coming from galaxies are on a constant
increase
3- Fact
3: Distance of a galaxy is directly proportional to the radial
velocity of the galaxy (the more distant it is, the faster it is)
4- Theory
(from Fact 1 and 2): The universe is expanding.
5- Theory
from Fact 3: At some point in past, all the mass in the universe was
at the same place and something caused it to drift apart (Big Bang
Theory)
This last example is very instructive to see
the interaction of scientists with science, with other scientists
and the pitfalls of scientific discovery. George Lemaitre, a
cosmologist and a catholic priest, looked at Einstein's theory of
general relativity and said that if that is true than for universe
to be stable, it has to be in a state of constant expansion. He
presented his papers to Einstein who was a bit of a pigheaded person
despite being the brilliant scientist. Einstein promptly rejected
Lemaitre's assertions and publicly called them "abominable". He
presented his own alternative, an arbitrary number called
"cosmological constant" to adjust the theory of general relativity
to show a static and stable universe. Edwin Hubble was the person
who proved that galaxies were receding. He presented the data
without presenting any theory. It would have been quite natural for
him to present the theory of Big Bang but he refrained from it
consciously. Once the data was there, Lemaitre reasserted his
theory. Einstein looked at the data (he personally visited Mount
Wilson observatory to meet with Hubble and verify his data) and
recanted his opinion. He praised Lemaitre in no less than in an
astronomical conference in Pasadena, California where he also said
that cosmological constant was the biggest blunder of his life.
So, facts are not
dependent on theories but the reverse is true. Stephen Jay Gould
wrote that once Einstein proposed that Newton's gravitational theory
was wrong, apples didn't suspend themselves in midair to wait and
see whether Einstein can prove Newton wrong or not.
I was not taught Big Bang Theory in school but I was taught Doppler
Effect. Evolution is a fact. Species evolve and go extinct. This has
been proven beyond any doubt with fossil records and other
observations. What Darwin did was to provide a theory that explains
the mechanism of the evolution. That theory can be right or wrong,
depending on the future data, but the existing facts are there,
staring us in the face. Coming back to the questions of what should be
taught and how, I would say, teach evolution, the hard facts of
evolution. Whether you choose to teach the mechanism of evolution or
not is insignificant. Inquisitive minds will find out the mechanism,
be it Darwin's theory or some other. Darwin's theory is currently
the leading theory to explain that mechanism. If you choose to teach
it in public schools, you can give your kids a head start. The facts
of evolution are a hard science and should be taught in natural
science class. The reason why conservative societies still shy away
from teaching the hard facts of evolution is because they are afraid
that they might point to the question of presence or absence of
intelligent design.
In your speech
and in subsequent comments, you quoted Phillip Johnson so let me
write a few lines about him. Phillip Johnson, the last time I
checked, was teaching law at UC Berkley and was a devout evangelical
Christian. I love reading him because it gives me the pleasure of
reading religious point of view presented in lawyerly fashion. I
suggest everyone who is interested in Darwin's theory to read
Johnson's book "Darwin on Trial". And if possible, read the copy I
have. Every other year, I pick that book up and mark where the new
data has proven him wrong.
Phillip Johnson doesn't just reject the Darwinian theory, he rejects
the evolution itself. He becomes parody of himself when he outright
rejects to believe the fossil records that show evolution and
liberally cites fossil records that show that certain species has not
evolved at all. Darwin didn't say that EVERY specie HAS to evolve in
so and so time.
There are three main arguments of Phillip Johnson (beside plainly
refusing to admit fossil evidence).
1- The familiar one; its just a theory and there is no proof for it.
2- Darwin's theory can not be falsified hence the assertion of
evolutionists to wait and see is unreasonable
3- How could so much complexity come about randomly? (Paley's
original "watch indicates watchmaker" argument)
I have addressed the first point already. Yes, its not been proven
but the data of evolution is irrefutable. You have a better theory
than Darwin, bring it on. Besides, if its not proven, it doesn't
automatically means its wrong. Darwin's theory can only be debunked
by data that tells us its wrong. Till that time, it remains the
strongest possibility.
Second, It is quite possible to falsify Darwin's theory. If a 550
millions years old fossil of a modern mammal turns up, Darwin's
theory will come tumbling down.
The third point, in other words, is that if I can't fathom
something, it can't be possible. The question is, how can such
complex mechanisms be developed randomly? I answer that question
with a question; complex to who? We, humans, live less than 100
years, our day is 24 hours long, we have money in our banks in the
tunes of numbers that maybe big for us (not in my case but I hope in
yours) but on a cosmic scale, insignificant. Something traveling at
300 KM/Hour is very fast for us. 3000 KMs is a long distance for us.
We continuously use machines that we can't build (hence complex to
us).
On cosmic scale, these are relatively miniscule realties. Light
travels at 300,000 KM per second which is unimaginable speed for
human mind but even with that speed, light takes 8 minutes from Sun,
our closest star, to us. When we look at the Sun, we are looking
back in time; 8 minutes back. One teaspoon of the mass of a pulsar
start weighs a billion tones. The galaxy we live in is 100,000 light
years from one end to another. Just try to imagine that distance;
the distance light would take 100,000 YEARS to complete at the speed
of 300,000 KM / Sec. The cosmic scale is staggering for human mind
to fathom. When we pronounce something complex, it's relative to the
life we experience. We can't imagine something like human eye
evolving in small, miniscule, cumulative changes but on a cosmic
level, that is far from incredible. We can't experience these things
in our very insignificant lifetime but we can demonstrate them
mathematically. I am here inclined to start playing some interesting
mathematics like how can one win a million consecutive coin tosses
or how can you write every book that is yet to be written;
apparently incredible claims but nothing given cosmic resources;
resources that are at the disposal of nature, but I will resist the
urge. Suffice to quote Archimedes; "give me a lever long enough and
I will move the world".
Thanks once again for responding to my comments. I have enjoyed this
discussion immensely and I hope I have contributed my fare share.
And whoever has read this to the end deserves the prize I give to my
8 years old son for reading a book; a Big KitKat bar.
Rafi Aamer
rafiaamer@comcast.net