Previously I have proved that life cannot have evolved. Today I will prove that life cannot exist.
Let us begin with Samuel Johnson’s response when asked whether we have free will. He replied that all theory holds that we do not, all experience that we do. A similar paradox occurs in the realm of Impossibility Theory. Many things occur in biology that all science says are possible, while all common sense says that they are not.
Consider the development of a barely-existent zygote into seven pounds of puzzled and alarmed baby. (“Where the hell is this?”) Anyone familiar with Murphy’s Law knows that it isn’t possible. Half an hour with a textbook of embryology will confirm this judgement. It is a case of phenomenal complexity following phenomenal complexity building on phenomenal complexity with, almost always, no errors of consequence.
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The resulting little science project enters wherever we are with a squall, the ductus arteriosus closes, the nursing instinct kicks in, and the interloper eventually grows into, God help us, a teenager (arguably the only flaw in the process).
Those with better sense than to read physiology may not grasp the wild improbability that this will work. Start with the cell. The likelihood that it will function is that of winning seven Irish Sweepstakes in a row. The chemical machinery, the mechanics—endoplasmic reticula, ribosomes, various flavors of RNA, and all dozens of such things functioning sufficiently flawlessly to continue in existence, rococo chemicals going about their business without gumming each other up.
Suspensory ligaments, connecting the lens of the eye to the ciliary body. Do you really believe these delicate ropes can form perfectly all by themselves ? If so, I figure somebody must have put something in your drugs.
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Common sense says that it can’t work. The sciences say that it can, and the fact that it does lends a certain weight to their argument. Each step in this impossible process can be shown to follow the laws of chemistry and physics. It all works. There is no need for spirits or poltergeists to explain it. Except that it obviously can’t happen.
Sez me, Something Else has to be involved. You tell me what, and we will split the Nobel money.
Here we run into one of those paradoxes that no one looks at because it would have dire consequences for how we think about things. Everything that happens in our heads as we think, or think we think, can similarly be shown ineluctably to follow the laws of chemistry and physics, meaning that we have to think what we think we think because it is predetermined. Back to Dr. Johnson.
A useful trait of the human mind, one that keeps us from going mad, is that is that if we see something enough times we begin to believe that it makes sense. This is not just the basis of quantum physics but of most of life. Women have babies all the time. It almost always works fine. Therefore it must make sense.
Again, physiology. Consider how the bones of our little bundle of joy turn into those of a middle linebacker in college. For a very small, short hollow bone to grow into a large, long hollow bone, unlikely things have to happen. Osteoclasts inside the cavity have to eat away the bone to make a larger cavity. Osteoblasts outside have to lay down more bone. They do this in precise coordination, which is impossible because they are on opposite sides of the cavity. Look at the skeleton of an adult. The bones are smooth, and flawlessly formed. The bone also has to grow in length. The mechanism of the articulation also has to grow, and do it exactly right. All of this works perfectly, which is impossible.
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Think about the ear: Tympanum-malleus-incus-stapes-cochlea. Incoming sounds vibrates the eardrum which jiggles one little bone that jiggles another that jiggles a third that jiggles the cochlea which figures out what is going on sonically. This works for vaguely 20 Hz to 20 kHz in young females. Dogs and cats have greater ranges. In people it functions with little impairment for seventy years.
While this does not seem at all likely, it does fit nicely into the dominant paradigm of crossword puzzle and tinker toy. This holds that the universe is like a gigantic crossword. Some parts we have filled in. Others we have not figured out yet, but we know that it is only a matter of time until we have it all. Nothing is inherently unknowable. We can fill in the whole puzzle.
The other half of this understanding is that everything can be explained mechanistically. If we can show that something occurs through a series of reactions, we have explained it entirely. This is beguiling, and redolent of nineteenth-century simplism. But…is it even plausible?
The following simplified description of the biochemical functioning of the retina is from Darwin’s Black Box: The Biochemical Challenge to Evolutionby Michael Behe. The book, which I recommend, is accessible to the intelligent laymen, for whom it is written. The author includes the following techno globe on the biochemistry of the retina to give a flavor of the complexity of things. The sensible reader will skip most of it.
When light first strikes the retina a photon interacts with a molecule called 11-cis-retinal, which rearranges within picoseconds to trans-retinal. (A picosecond is about the time it takes light to travel the breadth of a single human hair.) The change in the shape of the retinal molecule forces a change in the shape of the protein, rhodopsin, to which the retinal is tightly bound. The protein’s metamorphosis alters its behavior. Now called metarhodopsin II, the protein sticks to another protein, called transducin. Before bumping into metarhodopsin II, transducin had tightly bound a small molecule called GDP. But when transducin interacts with metarhodopsin II, the GDP falls off, and a molecule called GTP binds to transducin. (GTP is closely related to, but critically different from, GDP.)
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The biochemistry is way over my head, but the complexity is clear. The idea that this came about by accident requires powers of belief beyond mine, and the idea that it functions flawlessly for seventy years is more so. Ask a biochemist whether he can construct this system in the laboratory. Ask him whether he can construct any system of similar complexity that will work, maintaining itself, for seventy years.
From all of which I conclude that we are more puzzled than we believe we are. These thoughts will not be well-received by those more inclined to protect the paradigm than to examine it. Oh well.
