Trees Have Aesthetic Uses Too
It is true that the trees are for human use. But these are aesthetic uses as well as commercial uses—uses for the spiritual wealth of all, as well as the material wealth of some.
Memes in the Watson category “/science/medicine/surgery”
21–40 of 50
The Archeologist's Search Image
A fossil hunter needs sharp eyes and a keen search image, a mental template that subconsciously evaluates everything he sees in his search for telltale clues. A kind of mental radar works even if he isn't concentrating hard. A fossil mollusk expert has a mollusk search image. A fossil antelope expert has an antelope…
Characteristics of a Good Surgeon
It is necessary that a surgeon should have a temperate and moderate disposition. That he should have well-formed hands, long slender fingers, a strong body, not inclined to tremble and with all his members trained to the capable fulfilment of the wishes of his mind. He should be of deep intelligence and of a simple…
The Surgeon Must Have All the Facts in His Head
At a given instant everything the surgeon knows suddenly becomes important to the solution of the problem. You can't do it an hour later, or tomorrow. Nor can you go to the library and look it up.
Cultivate Good Habits While Your Young
Could the young but realize how soon they will become mere walking bundles of habits, they would give more heed to their conduct while in the plastic state. We are spinning our own fates, good or evil, and never to be undone. Every smallest stroke of virtue or of vice leaves its never so little scar. The drunken Rip…
Laws for Physicians in 1760 B.C.
If a physician make a large incision with an operating knife and cure it, or if he open a tumor (over the eye) with an operating knife, and saves the eye, he shall receive ten shekels in money. … If a physician make a large incision with an operating knife, and kill him, or open a tumor with an operating knife, and…
Natural Selection in Humans is Going Strong
The frequent allegation that the selective processes in the human species are no longer 'natural' is due to persistence of the obsolete nineteenth- century concept of 'natural' selection. The error of this view is made clear when we ask its proponents such questions as, why should the 'surviving fittest' be able to…
The Matter / Antimater Imbalance in the Universe
Physicists have long pondered the problem and may have an answer. It seems that just before the universe was one millisecond old, matter and antimatter annihilated each other in a sweeping extinction. But a tiny asymmetry was built into the universe so that matter dominated over antimatter by one part out of 100…
Surgeons are Like Astronauts
So much goes into doing a transplant operation. All the way from preparing the patient, to procuring the donor. It's like being an astronaut. The astronaut gets all the credit, he gets the trip to the moon, but he had nothing to do with the creation of the rocket, or navigating the ship. He's the privileged one who…
Scientists Do Not Seek Truth
Investigators are commonly said to be engaged in a search for the truth. I think they themselves would usually state their aims less pretentiously. What the experimenter is really trying to do is to learn whether facts can be established which will be recognized as facts by others and which will support some theory…
We Have Been Living Off Low-Hanging Fruit
We are failing to understand why we are failing. All of these problems have a single, little noticed root cause: We have been living off low-hanging fruit for at least three hundred years. … Yet during the last forty years, that low-hanging fruit started disappearing, and we started pretending it was still there. We…
A Mastectomy Without Anesthesia
In September 1811 the Herschels’ old friend Fanny Burney, by then the married Madame d’Arblay, underwent an agonising operation for breast cancer without anaesthetic. It was carried out by an outstanding French military surgeon, Dominique Larrey, in Paris, and so successfully concluded that she lived for another…
The Parallax Method
It is possible to measure how far away from us each galaxy is. How? How, for that matter, do we know how far away anything in the universe is? For nearby stars the best method uses something called 'parallax'. Hold your finger up in front of your face and look at it with your left eye closed. Now open your left eye…
The Difficult Choice of Being the First Heart Donor
For a dying man it is not a difficult decision [to agree to become the world's first heart transplant] ... because he knows he is at the end. If a lion chases you to the bank of a river filled with crocodiles, you will leap into the water convinced you have a chance to swim to the other side. But you would not accept…
QED Explained
Feynman's graphical method provides a way of visualizing each term in the sum over histories. Those pictures, called Feynman diagrams, are one of the most important tools of modern physics. In QED the sum over all possible histories can be represented as a sum over Feynman diagrams like those below, which represent…
Australopithecus afarensis' Hip Bone Indicates She Could Walk
When Lucy’s hundreds of fragments were assembled, she turned out to be a female of a new species, Australopithecus afarensis, dating back 3.2 million years. She was between 20 and 30 years old, 3.5feet tall, weighing a scant 60 pounds, and possibly afflicted with arthritis. But most important, she walked on two legs…
Evolution of the Eye
A possible sequence of such changes begins with simple eyespots made of light-sensitive pigment, as seen in flatworms. The skin then folds in, forming a cup that protects the eyespot and allows it to better localize the light source. Limpets have eyes like this. In the chambered nautilus, we see a further narrowing of…
Evolution Remodels the Old into New
...evolutionary change, even of a major sort, nearly always involves remodeling the old into the new. The legs of land animals are variations on the stout limbs of ancestral fish. The tiny middle ear bones of mammals are remodeled jawbones of their reptilian ancestors. The wings of birds were fashioned from the legs…
Design As Evidence of Evolution or Creation
It’s important to realize, though, that there’s a real difference in what you expect to see if organisms were consciously designed rather than if they evolved by natural selection. Natural selection is not a master engineer, but a tinkerer. It doesn’t produce the absolute perfection achievable by a designer starting…
The First Patient to Undergo Ether Was a Hero
Here the most sublime scene ever witnessed in the operating room was presented when the patient placed himself voluntarily upon the table, which was to become the altar of future fame. … The heroic bravery of the man who voluntarily placed himself upon the table, a subject for the surgeon’s knife, should be recorded…