| |||
|
IN-DEPTH FEATURES
Although many people today do believe in G-d, the modern
world is definite proof that even deep knowledge of the
material world does not force one to be a believer.
Nonetheless, if someone has a healthy mind (as HaRav Elchonon
Wassermann calls it in Kovetz Ma'amorim) and has
"perfected his mind" (as the Rambam calls it in Moreh
Nevuchim) to be able to see things clearly, he can find
many things in the world that lead to emunoh.
We truly live in an amazing world. There are many things that
cannot be dismissed as coincidences. There are many things
that, when normal people see them, they feel that they see
the work of a Higher Intelligence, and not just the result of
blind, random nature. I have catalogued some of these
here.
All of these are logically and philosophically variations of
what is known as the Argument from Design, the idea that the
world we live in shows evidence of order and design that
implies a Designer. However putting it that way is much drier
than reading about the specific examples that are given. Even
reading about these ideas and examples is, for many people,
not as convincing as actually seeing some of them in person
and working with them.
The Human Body
The human body is really in a class by itself. Aside from the
human mind, that is categorically different from anything
else in the world, and the human soul, that is altogether not
of this material world, even the human body has numerous
systems that are vastly different from any other physical
system, and many that are clearly different in superior
ways.
It seems that the unusual aspects of the body are separate and
independent of the human mind. Even though many of the physical
systems may improve human survival abilities, we may not have
really needed them all. It would seem that with our minds, if
survival were the only organizing principle, we could have excelled
without the varied advantages that we have from our bodies. We explain
our selves by saying that our bodies are also in the Divine image,
and thereby geared towards helping our spiritual tasks. Even our bodies
seem to show the stamp of higher purposes than mere physical survival.
For example, aside from the intelligence to speak (which is
also a complex ability composed of many logically distinct
parts) the physical apparatus that we have in our throats in
order to form words is far superior to anything else that
other animals have for this purpose.
Other examples of physically superior subsystems include the
arms, hands, legs, and the design of the head, all of which
are generally superior and also in ways that are uniquely
human, such as the fact that all the organs of the higher
senses are concentrated in the head which is itself a unit
distinct from the rest of the body. In some cases the
superiority is more pronounced than in others, and in some
cases elements are shared with other animals, at least to
some extent.
In Chayei Olom (Part II, Chapter 2) HaRav Yaakov
Kanievsky zt"l notes that humans are unique among
larger animals in walking on only two legs. Other animals use
their forward two legs to walk. Also in the human body the
stomach is not facing the ground, distinguishing people from
fowl which also walk on two legs.
Some people who have studied engineering reported that they
found the human hand much more impressive, and saw the need
for a Designer much more clearly, when they actually tried to
design a robotic hand themselves.
Another point that has been made is the robust nature of many
biological systems. For example, the digestive system of
humans (and animals, though for the most part to a lesser
extent) is capable of breaking down and using a startlingly
broad range of substances. One can eat a food never eaten
before and the digestive system is able to break it down,
discard the waste, and use the useful as it if had been doing
so forever.
Systems designed by humans are never so flexible.
The robust nature of our fuel system can also be described as
an apparent coordination between the digestive system and
potential foods in the world. To some extent the large
amounts of human foodstuffs in the world can also be seen as
an illustration of the principle of natural selection: good
foods are selected over non-foods for mass production. But
nonetheless the human digestive system is very robust.
Vision
One of the examples of biological systems that involved heavy
physics interactions is the vision system.
The function of vision is found in most creatures, yet there
are many variations. Relatively simple creatures such as
jellyfish have very simple vision systems. They cannot form
full images of objects. However they also have relatively
simple bodies and could not do anything with more information
if they could acquire it.
The human eye is an incredibly complex system. We can and
should thank G-d that we just see, but if we stop and think
about it, seeing itself is a very complicated thing. Just
trying to catalogue all the different ways that we see and
take in visual information is very hard. Now that engineers
have some experience in building completely artificial eyes,
we appreciate more how many distinct parts there are to the
visual system.
Darwin himself wrote, in a private letter written just two
years after he published The Origin of the Species,
"The eye to this day gives me a cold shudder" (Letter to Asa
Gray, from Life and Letters of Charles Darwin, vol. 2,
p. 273, quoted in a pamphlet from Arachim).
The eye must be able to receive and process visual
information. The cells of the eyes have to absorb this
information very quickly and pass it on to the brain. If all
this takes too long, it is worthless. How could you track a
fly in the air to swat it if you could only see where it was
a second ago?
In fact each eye has to have a special brain to go with it. A
human can process about ten scenes per second, with full
color and depth information. It needs to be able to acquire
all this information and rapidly interpret it. There are
massively parallel connections between the eye and the brain
in order to pass on the data fast enough to process it
meaningfully.
Other creatures can absorb a lot more information a lot more
quickly. Some insects can process 100 scenes per second. They
must have a suitable brain that can process all that
information or else the eye is useless.
On top of that, the eye is able to acquire information from
many angles, and from a moving platform. At the same time, it
can also focus near and far. This is accomplished by muscles
that change the position and focus of the lenses in the eye
itself. Thus, the eye also needs a very special muscle system
to control its operation.
In addition to all that, people have two eyes placed about 2
inches (about 5 centimeters) apart that each see the same
scene from a slightly different angle. Processing these
separate images and then combining them gives us our ability
to perceive the third dimension. Although we are so familiar
with this at almost every waking moment, it is not simple.
We need to have two magnificent eyes and then to coordinate
them and be able to process the images separately and then to
combine the differences in order to see this third dimension.
And again, this can be done while rapidly moving our bodies
and our heads, and also watching moving objects.
A Dog and a Mathematician
In www.sciencenewsforkids.org/articles/20031008/Feature1.asp
there is a report about a mathematician who found out that
his dog can do math better than he — and his dog never
spent a day in school!
Mathematician Tim Pennings noticed that when he threw a ball
into the water, his dog would first run along the beach and
then go into the water and swim to the ball at an angle.
Now the shortest distance to the ball is a straight line
through the water from where the dog is standing. However the
dog can run much faster than he can swim. So up to a point,
it pays to run along the sand. Even if the total distance the
dog has to traverse is longer, the total time is much
shorter.
After carefully measuring the distance that the dog ran along
the beach and the distance he swam, the mathematician was
able to show by calculation that his dog invariably picked
the fastest route to the ball. Though he could not teach a
course in calculus, it turns out that the dog can crunch the
numbers with the best of them!
Migration
The whole idea of migration is amazing: how it can ever get
started and how it works. It is easy to see that it confers
survival advantages for those who can do it, but it is not
clear how a local gene, inside an animal could ever come up
with the "idea" of trying out long range migration.
How could a body even know that it is warmer somewhere else
when it gets colder where it is located? How would it know in
which direction it was warmer? How — and really why
— would it try going back to the more temperate areas
next fall? Moreover, some of the travel plans are quite
complex and require high-precision navigation.
Migration is an apparent example of a system that is
irreducibly complex in the sense given by Michael Behe as we
explain below in more detail. All its elements require each
other in order to be meaningful.
However, migration appears to be something stronger: it seems
to be irreducibly goal-directed. It cannot be described
without referring to a goal which is not part of the
description of the system itself. The behavior of the flying
animals seems clearly to be "migration" and not just "flying
around."
The point of the idea of natural selection proposed by Darwin
to explain our wonderful universe is to show that behavior
that appears to be goal-directed can emerge from a system
that has random variations that are shaped by a purely
material principle. However, when a species makes a migratory
flight that consists of three very-precisely-navigated legs
it does not seem reasonable to describe it as an emergent
result. If so, the principle of natural selection is itself
too fantastic to be a purely material constraint.
Some young birds make their first migratory flight after all
the adults have left for the season since they are not ready
when the rest of their "family" goes. Nonetheless, they
somehow manage to travel thousands of miles and arrive at
exactly the same spot as their older relatives.
The New Zealand bronze cuckoo, is a case in point. After
breeding in New Zealand, the adult birds fly about 1500 miles
west across the Tasman Sea to Australia. After resting for a
few days, they continue northwest for another 2000 miles to
New Guinea. From there they continue northeast for a few
hundred miles more, again over open, featureless sea, to
their final destination, a group of islands called the
Bismarck Archipelago.
Cuckoos are land birds and they cannot swim. So unless the
entire flight over water is made in one trip, the birds are
doomed. The genetic program thus has to be quite precise.
Should it instruct travel of only 1000 miles west from New
Zealand or in the wrong direction or even at a bad angle,
these cuckoos would be dead birds. Did Evolution send
millions of cuckoos to a watery death until it finally got it
right?
Isn't it incredibly lucky for DNA to have mapped out the
route of the New Zealand bronze cuckoo?
"Head west (precise angle provided) for 1500 miles until you
reach land. Rest and feed for a few days before the next leg
of the trip. (You're dead if you don't, since you cannot
swim.) Travel 2000 miles northwest (again precise angle
provided) to the next major island. Then turn northeast (of
course, precise angle provided again) for several hundred
miles until you get to a group of small islands."
Imagine that! There actually is an island suitable for cuckoo
habitation at the end of this flight plan. How does it all
come together? How did all this come together to work so
well?
*
Monarch butterflies in North America migrate some 3,000
kilometers back and forth in winter and summer. Each Monarch
makes the round trip only once. The next year the travelers
are one and two generations removed from those who made the
trip the previous year. Somehow they know how to do it,
generation after generation.
Their flight seems very well-planned. They travel in large
groups, and seem to take advantage of air currents to
preserve energy. The descendants always go to and from the
same areas as their parents — sometimes even to the
same tree — even though these trees are set in the
middle of vast areas of forest that appear exactly the same
to us. How do they do it? We do not know yet. But how can a
mechanism set this up? Even one committed evolutionist
conceded that it is "seemingly impossible."
*
Writing in Yated Ne'eman, (parshas Zav, 5759) Rabbi
Yehoshua Honigwachs pointed out that the sylvia curruca
(lesser whitethroat) lives in northern Europe during spring
and summer and migrates to sub-Saharan Africa during the
autumn. It is a nocturnal migrant, flying only at night.
These birds use the stars to orient themselves for migratory
flight. Some of these birds were taken into a planetarium and
shown different views of the night sky. When shown the autumn
night sky as it would appear in their home locale during
migratory season, these birds aligned themselves and
attempted to fly in the direction of their migratory
route.
This was true even when the stars on the planetarium ceiling
were rotated in such a way that what appeared to be south was
really north (to rule out any use of the Earth's magnetic
field). When they were shown only diffuse weak light,
however, the birds aligned themselves only randomly. Both
these facts showed that the birds were using the
configuration of the stars for finding direction.
To get to Africa, the birds generally fly southeast from
northern Europe, passing over Bulgaria and Turkey. When they
come to the area of Cyprus, they turn due south, cut across
the Mediterranean and head straight up the Nile valley. They
then disperse over a fairly large area of mid-Africa.
As experimenters changed the star map in the planetarium, the
birds changed course. When shown the constellations as they
would appear over the northern parts of the their trip, their
alignment was southeast. But when the stars appeared as if
they were over Cyprus, the birds changed direction and headed
due south, just as they do in real life. Then when they were
shown the sky as it appears over their final destination,
they became totally disinterested in migratory behavior and
settled down to rest.
Amazingly, these birds were able to find their way to their
destination even when they were taken to a locale which they
had never experienced. When shown an image of a night sky
over Siberia, several thousand miles to the east of where
they normally were and a place to which they had never been,
they "knew" enough to turn west to get back to where they
belonged.
The image was then changed gradually to give the appearance
of actual flight to the west. As soon as the stellar
configuration gave the birds the appearance of being over
Romania, the birds changed course and began heading south,
the direction they must take to get to the Nile valley.
Show these birds a totally unrealistic sky, however, and they
get totally confused. They face in all different directions.
Since this type of configuration never happens in reality,
they have no way of "knowing" where they are.
It is amazing enough -- or farfetched-- for evolution to be able to develop a
mechanism within a body that is based on a correspondence to
something as vast and far away as the night sky. Although
there is clearly an advantage to a bird to be able to
navigate using the stars, how did its genes happen to
stumble, "randomly" (!?) on the information that has proved
so useful? And how did the blind hand of natural selection
manage to discard all the birds that did not know how to find
their way from Siberia?
According to an article in National Geographic (June,
1991) pigeons can sense changes in altitude of as little as
four millimeters. They can also see ultraviolet light, and
can hear extremely low frequency sound that can travel
thousands of miles. These inputs are presumed to help them in
navigation, but it is not known exactly how.
Some ants have a very complex eye that has a thousand lens
elements! These lenses are sensitive to patterns of polarized
light from the sun, and these patterns are used by the ant to
find its way back to its home and then out again to recover
some prey that it discovered.
Circumcision on the Eighth Day
The Torah says that circumcision is to be performed on the
eighth day. Certainly there are many factors that are
involved, some known and many unknown.
Although it may not prove anything, it is fascinating to note
that earlier than the eighth day, the blood clotting
abilities of the newborn are usually undeveloped.
Specifically, one of the vital clotting elements, Vitamin K,
is not formed in the normal amount until some time from the
fifth to the seventh day. Thus, the first safe day as far as
making sure that the infant will not lose too much blood is
the eighth day.
DNA
Each human cell contains 46 chromosomes, each of which is a
DNA molecule wrapped around proteins called histones. If all
the DNA molecules in one cell were unwrapped from the
histones and stretched out end-to-end, the total length would
be about six feet (2 meters). Almost every cell in your body
contains six feet of DNA, wrapped up into a very compact
space.
If all the information in the human genome were printed in
small type, it would fill a thousand thick telephone
directories. The whole sequence contains about three billion
base pairs (the genetic equivalent of alphabet letters),
including some 50,000 - 100,000 genes, each of which codes
for a specific protein.
The Hagfish
One the most primitive creatures in the ocean is the hagfish,
which is similar to many creatures that are long extinct.
This primitive, boneless, jawless fish looks similar to an
eel, but without visible eyes. The hagfish is a scavenger
that consumes dead creatures whose bodies have sunk to the
sea floor.
When threatened, a hagfish can emit up to a gallon (four
liters) of a syrupy, toxic slime onto itself, that makes it
almost impossible to capture. However, once the slime has
served its purpose, the hagfish needs a way to get rid of it.
It does this by tying its own tail in a knot, and then
sliding the knot all the way up past its head. When the knot
pops off its head, it slips out of the slime and swims
away.
It can also use its ability to tie itself to escape from
predators, and to enter carcasses to feed off them.
It is very unusual in that it can also sneeze in order to
clear its nostrils of slime.
Which came first: tying itself in a knot or the slime? Can
any other animal do anything like that?
End of Part I
|
All material
on this site is copyrighted and its use is restricted.
Click here for conditions of use.