Quote: Selection is "widely ignored"
From p. xviii-xix of the preface of Selection, by Graham Bell (Chapman and Hall, New York, 1997):
One might expect, for example, that in Britain, the cradle of evolutionary biology, natural selection might be accorded an honored and conspicuous position. But in the published curricula of the programs that students follow preparatory to the university, it is no more prominent than aquaculture....
The treatment of selection in textbooks usually follows more or less the same course. There is an introductory section on genetics, sometimes even outlining the chemical structure of DNA, followed by an account of Hardy-Weinberg equilibrium, a page or two of population genetics, and of course the history of the peppered moth. The whole is illustrated by a picture of Darwin, looking stern, as well he might. This is a caricature, of course, but by no means an unrecognizable one. Thousands of students have left courses on evolution with the vague impression that selection is something to do with the Hardy-Weinberg law, and study for the examination by trying to remember which it is that adenine pairs with.
Five scientists who made the modern world
If you were to make a list of the top five scientists who ever lived, who would you choose? People are asking the question (also, here, here). So far, it hasn't been all that interesting. All the lists have two or three names in common, and throw in two or three unexpected names for balance. Physics is highly overrepresented, either because people are easily impressed, or because they've watched Cosmos one too many times. Don't get me wrong, I like physics as much as anybody. But once your list includes Newton, Einstein, and Maxwell, and then you throw in Galileo, well there's not much room for anything else. None at all if you take Darwin as a given.
So I decided to do something a little different: What five scientists have had the greatest impact on human life? Yes, Newton was great, but gravity goes on without him. Many later discoveries stood on his shoulders, but Newton's achievements were far more intellectual than practical. I'm looking for people whose accomplishments saved lives, prevented wars, stopped hunger, or released people from endless drudgery. This isn't a list of inventors -- if it were, there would be a lot of ancient inventions like the moldboard plow that deserve more attention than anything modern. It's a list of scientists whose impact stretched across many fields, and without whom life today would likely be worse.
1. R. A. Fisher. His work in population genetics laid the foundations for the vast productivity increases of twentieth-century agriculture. He was far from alone in this, but he stood apart from his contemporaries by inventing many of the statistical methods that would come to define scientific hypothesis testing. Without Fisher's innovations in statistics, large-scale medical research studies would be meaningless. All this after he established the basis for Mendelian inheritance of continuous characters.
2. Louis Pasteur. Everyone knows that he kept milk from souring. His work established the germ theory, with immense effects on human medicine, food (and beer) production, and the care of crops and domesticated animals. Less well known is his early research on crystallography, which discovered the chirality of organic molecules and made use of methods that would later be essential to determine the structure of DNA. And, oh yeah, he developed the first man-made vaccines, curing the otherwise incurable rabies.
3. Leo Szilárd. How good can a physicist be and still be virtually unknown? Szilárd may set the bar. In his early career, he set out the mathematical connection between physical entropy and information, and was the first to conceive and (with Fermi) carry out a nuclear chain reaction. Most of the important physicists of his day were involved in the Manhattan Project, but Szilárd initiated it, drafting the famous letter from Einstein to Roosevelt. He organized pre-war efforts to keep atomic research secret, and founded post-war efforts to promote arms control. Then, he became a biologist: discovering that UV light kills bacteria, and inventing the chemostat. He made the atomic bomb and nuclear power possible, did everything possible to keep them from the Axis, and laid the groundwork for molecular biology. All this from a man who set out with his partner to invent a refrigerator with no moving parts. The partner: Albert Einstein.
4. John von Neumann. The indispensable mathematician, he did more than anyone else to create the postwar world. His developments in game theory shaped the Cold War, his work in formal logic led to Gödel's famous incompleteness theorem, and his early work with computers paved the way to the information revolution. He brought computers into the Manhattan Project, helped develop the hydrogen bomb, and developed new simulation methods essential to building efficient jet and rocket engines, and ultimately modeling all kinds of scientific problems.
5. This one is for you. Who else belongs on this list?
John Hawks Department of Anthropology
University of Wisconsin—Madison
Copyright © 2007 John Hawks