 A designer designs models by means of sketching on blank paper. Everything that the designer has seen up to that point constitutes the base of the idea from which his current design is derived. That is because every form and shape in nature is a design. No human designer can design something that they have never seen or never known.Let us examine the way that a design follows in the formation of a new design: first, the designer determines the material and purpose of the design. Then the designer determines the potential user, the needs of the user and therefore the parametres of the design. Among all career groups in the world, industrial product designers are probably those who need the least material while working. That is because besides hard work, a good design requires primarily devising clever ideas or subsidiary details during the process. At the beginning, a designer needs nothing more than a clean sheet of paper and a pen. While forming his design, he of course reviews and takes precedent examples as models. The designer sketches hundreds of different alternatives for months. Then these ideas are reviewed and, from among them, the most functional and aesthetic is selected for production, after which details of feasible production are studied. First, a scale model of the product is made, which transfers two dimensional ideas into three dimensions. After further refinements, an actual size model of the product can be constructed. All of these processes may take years. During this time, the model is also experimented with and tested for user friendliness.
Therefore, the process from initial conception to production is quite extensive. In fact, the Sole Owner of all designs is One Who has power over all things. God creates all creatures flawlessly through a single command: ”be”. The faculty of creating from nothing and without precedent belongs to God alone. Humans just copy these examples. Furthermore, the human designer is himself a wonderful creation. God created creatures and humans from nothing and bestowed on humans the skills for designing. For many things that we think are the result of human design there are precedents in nature. The structures and technological products that emerge after years of research had already been present in nature for millions of years. Aware of these facts, designers, architects and scientists choose to follow the exemplary properties of God’s creations in designing new products.
The American army has been known to be exploring micro machines for a long time. According to Professor Johannes Smith, a motor smaller than 0.039 inch (one millimetre) can drive a robot the size of an ant. A robot such as this is under consideration for use in a small army of ant-like robots in order to penetrate behind enemy lines undetected and damage jet engines, radars and computer terminals. Two of Japan’s largest industrial corporations, Mitsubishi and Matsushita, have already taken the first steps in collaborating on the subject. The outcome of this collaboration is a minute robot weighing 0.015 ounce (0.42 gram) and walking 13 feet (4 metres) a minute.
Chitin: Perfect Cladding Material Insects are the most populous creatures on earth, which is largely because their bodies are very resistant to many adverse conditions. One of the factors in their resistance is the chitin substance that forms their skeletons.Chitin is extremely lightweight and thin. Insects never face hardship maintaining it. Although it wraps the body externally, it is sturdy enough to act as a skeleton. At the same time, it is outstandingly flexible. It can be moved by means of muscles attached to it from inside the body. This not only improves the rapid movement of the insects but also decreases the impact of external blows. It is waterproof because of a special exterior coating, which doesn’t allow seepage of any body fluids.46 It is unaffected by heat or radiation. Most of the time, its colour fits the surroundings perfectly. Sometimes it signals warnings through bright colours. What would happen if such a substance as chitin were used in aircraft and space ships? In fact, this is the dream of many scientists.
The Ideal Shape of Red Blood Cells
The Chromatic Eyes of Balloon Fish  Balloon fish reside in the warm seawaters of South-eastern Asia. When excess amounts of light fall on them, the eyes of this fish act as a “chemical sun-glasses”. The eyes of this 1 inch long (2.5 centimetre) fish show properties similar to photochromic lenses, the colours of which can become more or less intense depending on the strength of the light.The system functions as follows: when the fish encounters excessive light, the chromatic cells called “chromatophore”, which are located around the transparent layer (cornea) of the eye, start to release a yellowish dye (pigment). This pigment covers the eye and acts as a filter reducing the intensity of light, which enables the fish to see more accurately. In dark waters, this pigment disappears and the eye receives the maximum possible amount of light.48 It is obvious that this system is a product of conscious design. These cells releasing or clearing pigments is regulated consciously and cannot be considered as a product of coincidence. It is an expression of the perfection in the creation of God that an irreducibly complex organ structure such as the eye should be equipped with such a flawless chromatic system.
MECHANIC SYSTEM DESIGN OF CREATURES  Often, the design of moving systems is much more challenging to designers than stationary structural systems. For instance, the problems encountered in the design of a hand-drill are much more numerous than in that of a jug. This is because the former is based on functionality but the latter on form, and function oriented designs are more complicated. Each component of design should serve a purpose for a specific goal. Absence or malfunction of a single component renders the system useless.Designs with such errors are doomed to failure. Mechanical systems designed by humans generally have more flaws than commonly believed. Many of these systems have been designed by trial and error. Although some defects are eliminated during the prototyping phase prior to the product’s introduction to the market, not every defect can be prevented. The same argument cannot be made for mechanical systems in nature. All the mechanical systems in all creatures are perfect. God has created all creatures flawlessly. Let us take a closer look at some of the examples of this perfect creation. THE SKULL OF WOODPECKER Woodpeckers feed on insects and larva, laid inside tree trunks that they uncover by pecking. They carve their nests in living healthy trees, which takes carving skills just as great as those of carpenters.
While the green woodpecker drills for a nest, the working speed of its beak can exceed 62 mph (100 km/h). This does not affect its brain in any way, which is the size of a cherry. The time lag between two consecutive strikes is less then one thousandth of a second. When it starts pecking, head and beak line up perfectly on a straight line, but the smallest deviation could cause severe ruptures in the brain. The impact of this kind of hitting is in effect no different from banging the head against a concrete wall. It takes extraordinary design for the bird’s brain not to be injured. The skull bones of the majority of birds are joined together, and the beak functions with the motion of the lower jaw. However, the beaks and skulls of woodpeckers have been separated by a spongy tissue that absorbs the shocks of impact. This flexible substance works better than shock-absorbers in automobiles. The excellence of this material derives from its capability of absorbing impacts of very short duration and then restoring itself its to original condition immediately. This performance is maintained even where nearly nine to ten hits are made per second. This material is far superior to materials developed by modern technology. The isolation of the beak from the skull by this extraordinary method enables the compartment holding the woodpecker’s brain to move away from the upper beak during hits, and this works as a secondary mechanism for absorbing shocks.49 The Flea: the Ideal Design for High Jumps
The skeleton of the insect is not inside its body. It is composed of a hard layer of a compound called sclerotin, which wraps the entire body and is attached to the chitin. Numerous armoured plates with limited movement form this outer skeleton, which absorbs and eliminates the shock of jumping.
The blood is cleaned by means of air vents scattered throughout the body. This eliminates the need for a giant pump to continually pump oxygen. Its heart is shaped like a tube and beats at such a low rate that the jumps do not affect it at all. Scientists discovered through research that the leg muscles of fleas are not as strong as the jumps would really require. The extraordinary performance enjoyed by fleas is made possible by a kind of spring system that is added to its legs, which works because of a rubberlike protein called "resilin", where the flea stores mechanical energy. The outstanding property of this substance is its ability to release in stretching up to 97% percent of the energy that is stored in it. The most flexible material in the market today has a ratio of 85%. This elastic material is located at the base of the large hind legs of the animal in tiny pads. The flea takes a few tenths of seconds to compress this material as it folds it s legs in preparation for a jump. A ratchetlike structure holds the leg folded until a muscle is relaxed and the spring-like structure powers the jump through stored energy in the resilin which translates into tremendous leaps. The Acorn Weevil and its Drilling Mechanism
At other times, the insect holds this snout horizontal, in line with its body, so that it does not interfere when it walks. However, when it is on an acorn, it tilts this snout towards it. Then the insect looks very much like a drilling machine. It leans the saw-like teeth at the tip of its snout against the acorn. The insect turns its head from one side to the other, moving the snout, which starts to drill the acorn. The head of the insect is of a perfect design for the job and displays an extraordinary level of flexibility.
This feeding continues until the acorn falls from the branch, which is the signal for the larva that it is time to leave. By means of its strong teeth, it enlarges the hole that its mother made. The extremely fat larva gets out of the acorn with a great deal of struggle. Now the goal for the larva is to tunnel down about 10-12 inches (25-30 centimetres) under the ground. There it goes through pupation and waits for one to five years. When it becomes a full grown adult, it climbs up and starts drilling acorns in turn. The time differential in the pupation period depends on the new growth of the acorns on the tree.50 The interesting life cycle of the acorn weevil is another evidence of the flawless creation of God, and it nullifies the arguments of the theory of evolution. Each mechanism of the insect has been designed within a certain plan. The drilling snout, the cutting teeth on the tip, the flexible structure of the head which helps drilling, cannot all be explained solely by coincidences and “natural selection”. The long snout would have been nothing more than a great burden and a disadvantage if it weren’t successfully used for drilling, which is why it cannot be argued to have evolved “phase by phase”.
God has created this creature with flawless organs and instincts. He is "the Maker" of everything. (Surat al-Hashr:24)
The Bacterial Flagellum Some bacteria use a whip-like organ called a “flagellum” to move about in a liquid environment. This organ is embedded in to the cell membrane and enables the bacterium to move at will in a chosen direction at a particular speed.
The propeller-like engine is constructed on the same mechanical principles as an electric motor. There are two main parts to it: a moving part ("the rotor") and a stationary one ("the stator"). The bacterial flagellum is different from all other organic systems that produce mechanical motion. The cell does not utilise available energy stored as ATP molecules. Instead, it has a special energy source: bacteria use energy from the flow of ions across their outer cell membranes. The inner structure of the motor is extremely complex. Approximately 240 distinct proteins go into constructing the flagellum. Each one of these is carefully positioned. Scientists have determined that these proteins carry the signals turning the motor on or off, form joints to facilitate movements at the atomic scale, and activate other proteins that connect the flagellum to the cell membrane. The models constructed to summarise the working of the system are enough to depict the complicated nature of the system.53
The bacterial flagellum is clear evidence that even in supposedly "primitive" creatures, there is an extraordinary design. As humanity becomes more deeply immersed in details, it becomes increasingly obvious that the organisms scientists of the 19th century, including Darwin, considered to be the simplest, are in fact just as complex as any others. In other words, as the perfection of the creation becomes clearer, the senselessness of the struggle to find alternative explanations for the creation is much more obvious.
Design in Dolphins Dolphins and whales breathe using their lungs just like other mammals, which means they cannot breathe in the water like fish. This is why they regularly visit the surface. The blowhole which is situated on top of their heads work for air intake. This organ is designed in such a way that when the animal dives into water, the opening closes automatically with a special cap in order to prevent water from entering. The cap automatically opens again when the dolphin surfaces.In other words, dolphins consciously decide to breathe as we make the choice to walk. There is a system created to prevent the death of the creature during its sleep under water. The sleeping dolphin uses the right and left hemispheres of its brain alternatively for periods of about fifteen minutes. While one hemisphere sleeps, the dolphin uses the other to surface for air. The snout of dolphin’s beak is another feature that improves their swimming. The animal uses less energy in cutting through the water and swimming at higher speeds. Modern ships, too, make use of a bow like the dolphin’s snout, hydro-dynamically designed to increase the speed of ships just like dolphins.
SOCIAL LIFE OF DOLPHINS Dolphins live in very large groups. For protection, females and offspring are located in the centre of the group. The sick are not left alone but are kept in the group until they die. The ties of interdependence are formed from the first day a new offspring joins the group.Dolphin calves are born tail first. This way the infant is provided with oxygen throughout delivery. When at last the head is released, the newly born dolphin rushes for the surface for the first gasp of air. Generally, during delivery another female accompanies the mother giving birth. Mothers start to nurse their young immediately after birth. The new dolphin, lacking lips to suck, receives milk through two sources coming out of a slit on the mother’s ventral surface. When it taps gently on this section, the milk is sprayed out. The young dolphin consumes dozens of quarts (litres) of milk every day. 50% of the milk is composed of fat (compared to 15% in cattle milk), which promptly works towards building the skin layer necessary to regulate body temperature. Other females also help the young dolphins during rapid dives, by pushing them down. Newly born dolphins are also taught how to hunt and use their echolocation sonar, which is an educational process continuing for years. In some cases, young dolphins may never leave a particular family member for up to thirty years. The System Preventing the Bends Dolphins can dive down to depths that cannot be matched by humans. The recordholder in this category is a species of whale that can dive down to 9900 feet (3000 metres) on a single breath. Both dolphins and whales are created appropriately for these kinds of dives. The tail flukes make diving and surfacing much easier. Another aspect of the design for diving is in the lungs of these animals: as the animal descends the weight of the water column above, i.e. the pressure, increases. The pressure inside the lungs is increased to balance the outside pressure. If the same pressure were to be applied to human lungs, they would easily disintegrate. In order to overcome this danger, there is a special defensive system lodged in a dolphin’s body: the bronchi and air cells (alveoli) inside the dolphin’s lungs are protected by rings of cartilage that are extremely durable.Another example of the perfection of creation in the bodies of dolphins is the system that prevents the bends. When divers ascend to the surface too quickly, they face this danger. The reason for the bends is the entrance of air directly into the blood and formation of air bubbles in the arteries. These air bubbles can cause death by preventing blood circulation. Whales and dolphins, however, do not face similar dangers, although they breathe using their lungs. This is because they dive with lungs not full of air but empty. Since there is no air in their lungs, they do not run the risk of getting bent. Nevertheless, this leads to the real question: if they do not have any air in their lungs how do they not suffocate due to lack of oxygen? The answer to this question lies with the “myoglobin” protein that is found in their muscle tissue in high proportions. The myoglobin proteins have a high affinity for oxygen, so the oxygen necessary for the creature is not stored in the lungs but directly in the muscles. Dolphins and whales can swim without breathing for extended periods, and can dive as deep as they like. Humans also have myoglobin protein, but it cannot sustain the same conditions due to its much smaller volume. This biochemical adjustment unique to dolphins and whales is, of course, evidence of deliberate design. God created sea mammals, like the rest of the animals, with body structures best fitted to the conditions in which they live. The Pump in a Giraffe A giraffe, with its height nearly 16.5 feet (5 metres), is one of the largest creatures. In order to survive, the animal has to send blood to a brain located approximately 6.6 feet (2 metres) above the heart. This requires an extraordinary heart structure. Consequently, the heart of the giraffe is strong enough to pump blood at a pressure of 350 mmHg.Such a powerful system, which would normally kill a human, is contained within a special chamber, and has been wrapped with a web of capillaries in order to reduce the deadly affects. In the section between the head and the heart there is a U-shaped system, comprised of an ascending and descending vessel. The blood flowing in vessels of opposite direction balances itself, which saves the animal from dangerously high blood pressures that can cause internal bleeding. The portion below the heart, especially legs and feet, needs special protection. The extra thickness of giraffe skin on legs and feet prevents adverse affects of high blood pressure. In addition, there are valves inside the vessels that help regulate the pressure. The biggest danger is when the animal lowers its head to the ground in order to get a drink of water. The blood pressure, which is normally high enough to cause internal bleeding, now increases even more. However, there a measure has been taken against these affects. A special fluid called cerebrospinal fluid, which bathes the brain and the spinal column itself, produces a counterpressure to prevent rupture or capillary leakage. In addition, there are one-way check valves which close when the animal lowers its head. These valves reduce the flow of blood significantly, and the giraffe can safely drink and raise its head. As a caution against dangers of high blood pressure, the vessels of the giraffe are very thick and created in multiple layers. The Design of Honeybees’ Defence Strategy
When a hornet discovers a new bee colony, it communicates the news to others by secreting a special smell. The same odour is also detected by the honeybees, which start congregating at the entrance of the beehive for defence. When a hornet draws near, approximately 500 honeybees immediately surround it. They start vibrating their bodies and increase their body temperatures. This, to the wasp, feels like being stuck in an oven and at the end of this the wasp dies. In the heat sensitive photograph of such an attack, the temperature of the white areas can reach 118°F (48°C). Such a high temperature is bearable for honeybees but lethal to the hornets.55 Miracles of Reproduction in Frogs Many suppose that frogs multiply through hatching eggs and developing “tadpoles”. However, there are many other types of frog reproduction of which some are quite surprising.Frogs have been created with traits that enable them to survive in a variety of environments. Therefore, they can live in every continent apart from Antarctica; there are species of frogs living in deserts, forests, meadows and the Himalayas and Andes, where altitudes exceed 16,500 feet (5000 metres). The densest populations are scattered throughout the tropical regions. Approximately forty species of frogs have been identified within a 0.8 square mile (2 square kilometre) piece of rain forest.  In some species of frogs, only males care for the newly born, whereas in others only females do or both partners do. For example, males of the “dart-poison frog” of Costa Rica keep watch, waiting for the eggs to hatch, for up to 10-12 days. Through great efforts, the newly born tadpoles climb and hold on to the back of the mother so tightly that they appear to have been welded on. Then the mother climbs onto a bromeliad in the forest. The flowers of this tree are shaped like goblets pointing skyward, and are filled with water. The mother releases the newly born frogs into these flowers, where they grow safely.Since there is no food in these waters, the mother frequently lays unfertilised eggs in the flowers for the newly born frogs. The tadpoles feed on these eggs, which are rich in protein and carbohydrates.56 The “gladiator frog” is another species that defends the area in which are the eggs. The males of these frogs have been created with pin-like extensions under their thumbs, with which they rip the skin off an intruder male. The male small African toad (Nectophyrne afra) constructs nests out of mud, which are filled with water to form ponds, on the coasts of lakes or slow flowing rivers. The frog makes a fragile layer of film on the surface of the water to which the eggs attach themselves. This way, the eggs stay on the surface of the water in order to inhale oxygen. Since a minute vibration caused by another frog or a dragonfly’s flying past can destroy this film and send the eggs to the bottom of the water, where they would be left to die without oxygen, the male frog guards the eggs. While waiting, it kicks its feet in the water in order to increase oxygen flow through the membranes of the eggs. Another species, called the glass frog due to its transparency, does not keep watch over its eggs. God inspires another method in these frogs; they leave groups of eggs on the rocks and plants of the tropical lakes or rivers. When the eggs hatch, the tadpoles drop into the water.
Frogs Reproduced in the Stomach
A flawless system has been created to enable them to do so. First, the female ceases to feed for those six weeks, which means the stomach is reserved solely for the tadpoles. However, another danger is the regular release of hydrochloric acid and pepsin in the stomach. These chemicals would normally quickly kill the offspring. However, this is prevented by a very special measure. The fluids in the stomach of the mother are neutralised by the hormonelike substance prostaglandin E2, which is secreted first by the egg capsules and then by the tadpoles. Hence, the offspring grow healthily, even though they are swimming in a pool of acid. How do the tadpoles feed inside the empty stomach? The solution to this has been thought of, too. The eggs of this species are significantly larger than those of others, as they contain a yoke very rich in proteins, sufficient to feed the tadpoles for six weeks. The time of birth is designed perfectly as well. The oesophagus of the female frog dilates during birth, just like the vagina of mammals during delivery. Once the young have emerged, the oesophagus and the stomach both return to normal, and the female starts feeding again.57
Therefore, this system cannot have developed step-by-step, as asserted by the theory of evolution. The very first frog of the Rheobatrachus silus species existed with this complete flawless system. All of the creatures examined throughout this book prove the same fact: there is a supreme design in creation encompassing all nature. God created all living things with irreducible complexity, in which His infinite power and knowledge are illustrated for those who examine them.
Greatest Design: Universe There are unchangeable fundamental laws in the universe, which affect all animate and inanimate beings alike. These laws are proofs that illustrate the perfection in the creation of the universe just as are the flawless creatures that live therein. Today, these hints are presented to us as laws of physics as discovered largely by physicists. The laws ordinarily accepted as “laws of physics” are nothing but the evidence of the perfection in creation of God.Let us give just a few examples of the perfection of design in the universe.  For instance, let us examine one of a dozen crucial properties of rainwater: the “viscosity of water”.Different liquids have different degrees of velocity. However, the viscosity of water is perfect for the use of all creatures. If it was a little higher than it is, plants could not have used it for transporting the nutrients vitally important for survival within their capillary tubes. If the viscosity of water were lower than it is, the flow of rivers would have been a great deal different, hence the mountain formations would have changed, valleys and plateaus would not have formed, and rocks could not have disintegrated to form soil. Water also facilitates the circulation of the red blood cells that defend our bodies against microbes and dangerous substances. If water's viscosity were greater, the movement of these cells within the vessels would have been totally impossible, the heart would have been overwhelmed in pumping the blood and would possibly have failed to obtain the energy necessary for this job. Even these few examples sufficiently illustrate that water is a fluid that has been especially created for living beings. Balance of Forces What would happen if the gravitational force were greater than it is today? Running or walking would be impossible. Humans and animals would spend much more energy moving about, which would diminish the energy resources of the earth. What if gravity were less powerful? Light objects could not maintain their state of balance. For instance, dust particles picked up by breezes would float in the air for long periods. The speed of raindrops would decrease, and they possibly would evaporate before reaching the ground. Rivers would flow more slowly and hence electricity would not be generated at the same rate.All this is rooted in the property of the gravitational pull of masses. Newton’s law of gravitation states that the force of the gravitational attraction between objects depends on their masses and the distance between them. Hence, if the distance between two stars is increased three times, the gravitational force is decreased by a factor of nine, or if the distance is decreased to half, the force of gravity is increased four times. This law helps explain the current positions of the earth, moon and planets. If the law of gravitation were different, for example, if the gravitational force were increased as the distance increased, the orbits of the planets would not be elliptical and they would collapse into the sun. If it were weaker, the earth would be set on a course steadily away from the sun. So, if the force of gravity did not have precisely the value it does, the earth would either collide with the sun or be lost in the depths of space. What if Planck’s Constant were Different? We encounter different forms of energy all the time. For instance, even the heat that we sense in front of the fire has been created with intricate balances.In physics, energy is assumed to radiate not as a wave but in small particular amounts called “quanta”. In calculating the radiant energy, a certain unchanging value called Planck’s Constant is used. This number is generally small enough to be considered negligible. This number is one of the fundamental and unchanging indices in nature, which is approximately expressed as 6.626x10-34. In any situation involving radiation, if the energy of a photon is divided by its frequency the result will always equal this constant. All forms of electromagnetic energy, i.e. heat, light, etc. are governed by Planck’s Constant. If this minute number were a different size, then the heat we sense in front of a fire would have been much stronger. Either, at one extreme, the smallest fire could have contained enough energy to burn us up or at the other extreme, even a giant fireball the size of the sun would not have been sufficient to warm the earth. Frictional Force
All of these laws of physics are clear proofs that the universe, just like all the creatures within it, is a product of divine design. In fact, the laws of physics are nothing but human explanations and descriptions of the divine order that God has created. God has created the unchanging laws of order in the universe and put them in the service of humans so that man will reflect upon and understand the Sovereignty of God and give thanks for His blessings. One can continue giving countless examples in illustration of the order in the creation of God. Every created thing since the formation of the universe millions of years ago has been brought into existence by nothing other than the Omniscience and Sovereignty of God.
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18 Haziran 2010 Cuma
Design and Creation
Each neuron cell contains units that are only responsible for transferring information. A single brain can process work equivalent to that of 4.5 million transistors on a modern microprocessor. The millions becomes insignificant in comparison with ten billion, highly capable neurons transmitting information in the brain. In addition, there is not a single industrial product that can imitate the faculties of taste and smell in the brain.
Our organisms are defended by roughly 200 billion white blood cells. Just like soldiers, these blood cells have an intelligence system, lethal weaponry and special battle strategies. However, no other army on earth is as punctual, perfect and successful as the immune system.
Everything in the body is in a state of communication. Many messages are in the form of hormones composed of large molecules. There is no receiver on the packages of messages carried by the hormones that freely wander in the circulatory system and among the neurons. However, the package always gets to its place because the organs receiving the messages are equipped with special sensors.
Muscle movements contribute to warming up of the body in cold weather. Muscles can provide up to 90% of body heat in this way. Perspiration, on the other hand, functions as the ideal cooling mechanism against overheating. These two balancing systems work together to maintain a steady body temperature. This system works much more swiftly and with more precision than any other air conditioning system.
The cell is a very energy efficient engine. It consumes small molecules called ATP for fuel. Its efficiency in burning this fuel is much greater than any other engine known to mankind. In addition, the cell simultaneously performs a diverse variety of tasks, such as no manmade device can handle.
The arm works like a lever. The supporting pivot is the elbow, about which the muscles facilitate movement through contractions and flexions. Excavators also work on the same principles. While the excavator exerts the same force under all loads, the muscles of the arm control the intensity of forces.
There are two main possible outcomes for any system receiving impacts. It will either cause a dent or cause some parts to break away. The skeletons of creatures and the chassis of the car have been designed to minimise the impacts on the bodies. However, the chassis lacks the ability of bones to repair themselves.
The human kidneys filtering units about 37 gallons (140 litres) of blood everyday, through one million small filtering units called nephrons, and that continues for about eighty years without rest. Refinery pants designed for industrial wastes can hold much greater quantities, but their lifespan is considerably less. Furthermore, the chemical composition of the substances they filter are much less complicated in comparison to blood. A kidney is far more complex and efficient than any refinery plant.
The minute hairs in the inner ear of a human convert sounds into electric signals just as do a microphone. The ear can only sense sounds between the frequencies of 20-20,000 Hz. This spectrum is ideal for humans. If the human were to have a larger spectrum, we would hear sounds from the footsteps of an ant to high frequency sound waves in the atmosphere. This situation would not have been comfortable for humans at all, due to the presence of a continuous noise.
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