Showing posts with label Selfish Gene. Show all posts
Showing posts with label Selfish Gene. Show all posts

Saturday, October 11, 2014

Review of The Selfish Gene by Richard Dawkins

I can't remember how but when I was 16 I came across this book and it changed my life. The title of Dawkins biography is "An appetite for wonder", and this appetite is no where more apparent than in this book (I have read most of his books). It is a wonderful introduction to the theory of evolution by natural (and sexual) selection, behavioral ecology, and the wonders of nature. At the same time it serves as a terrific example of first rate scientific reasoning. The writing is clear and fluid and extremely elegant. In his autobiography Dawkins admits that every sentence has been rewritten multiple times. Those that have survived this selection process really deliver. Every sentence seem to fill a purpose and yet, rarely does one feel that information is in some way lacking. This book, when it came out in the late seventies, influenced the general public and academics alike. It changed how academics thought about genes and evolution, and it introduced the meme, which has subsequently entered our dictionaries.




As I have said elsewhere, this book really is a literary masterpiece. The fact that it also teaches science to the reader is an added benefit that makes this book one of the best and most important ever written.

The book has a very good structure. At no point does it feel as if new concepts are introduced inappropriately. Dawkins begins by slowly and carefully introducing the replicator concept. In the widest sense a replicator is, as the name implies, something that replicates itself. This can be a mineral shape, a computer virus or a molecule such as RNA or DNA. It is inevitable that a replicator that produce more copies or copies that are more durable will become more prominent in the population. And so it is with our genes. The genes that exist in humans that are alive today are descendents of a very long series of genes that outperformed other genes. To achieve this success the genes have used many different tricks. Primary among these is cooperation with other genes to construct vehicles such as a plant or an animal that can both protect the genes and pass them on. Humans are thus "merely" vehicles created by genes for the benefit of genes (though in another sense we are of course much more than that).

Dawkins carefully builds from this starting point and reaches startling conclusions about many different aspects of nature and evolution. Why did sex evolve and why do the different sexes differ to a greater or a lesser extent in different species? Why are males in general more aggressive? Why do we cooperate? Does altruism exist? How did sterile ants evolve? Whatever he is discussing, Dawkins always provides illustrative examples from nature and when he use metaphors he is (unlike many others) always careful to translate those metaphors back into the language of replicators. The Selfish Gene also derives some of its fame from the fact that it introduced the meme concept. A meme, Dawkins suggested is like a gene in that it can replicate itself, typically via language or imitation. Successful memes (think viral youtube clips) will spread throughout population of less successful memes in the same way that successful genes spread, however, for memes the sexual reproduction of its host matters little. Rather, the success of a meme is determined by its ability to make its host share the idea with others. The meme concept is now in most dictionaries.

Throughout the book Dawkins is careful to point out that even though we are products of evolution and as a result have many instincts that are not always very noble, that does not mean that it is in anyway good or moral to follow ones evolutionary inclinations. Indeed if we understand human instincts we may be better able to construct societies that combat our caveman instincts.

Sunday, October 20, 2013

Review of An Appetite for Wonder by Richard Dawkins

Richard Dawkins is an amazing scientist. I have always thought so and this first part in his autobiography trilogy do reinforce my favorable view on Dawkins. His greatness, in my opinion, primarily lies in his unequaled ability to convey science to the general public using a language which should make him eligible for the Nobel prize in literature (seriously!). His book, the selfish gene is probably the book that have meant the most to me personally, all categories, and reading excerpts from it in this book made me remember what a great book it was, and still is. In fact, reading “An appetite for wonder”, made me decide to re-read Dawkins original best-seller (which I am now doing).

                                                          

Yes, Dawkins is a fantastic writer and scientist, but this book, on the whole, did not live up to my admittedly high expectations. Perhaps others will disagree with me but I am not personally very interested in great people’s childhood, unless it is truly extraordinary. Yes Dawkins grew up in Africa and that was probably interesting, however, I would personally have preferred if this section was significantly shorter or left out.

The book gets more interesting when Richard gets into Balliol college, Oxford. As a University teacher one of my favorite sections of the book was Dawkins description of the education system in Oxford. Their system in which students each week study a new topic by reading up on the scientific literature and try to form hypotheses, and then discuss what they have learnt with tutors who are also leading scientists made me, well… jealous. He claims that students at oxford never asked the question, “will this be on the exam?”, which is a question I get all too frequently…

Following his description of the education system in Oxford a semi-interesting description of his early years in academia follows. The book, in my opinion reaches its climax towards the end when Dawkins discusses and reads excerpts from the Selfish Gene. I realize it may sound nerdy but just hearing a few lines from that book can increase my pulse significantly, and it was interesting to get to understand how the book came about. I was also pleased to find out that, like myself, the great writer Richard Dawkins does not write his book in one go. Rather, every sentence that he writes have been written and re-written many times. Like the natural selection of biological organisms, this way of writing should lead to evolution of better sentences and in the end a better book. This is certainly the case with the Selfish Gene.

Monday, October 14, 2013

Quote from the Selfish Gene

I am currently re-reading the Selfish Gene which is a book I think everyone should read. Few books are simultaneously beautifully written, clear in thought, and dense with information at the same time, but the Selfish Gene is certainly all this. As a teaser, take this often cited quote from the end of chapter two. Dawkins is talking about ancient molecules capable of making copies of themselves (replicators). These replicators are the rulers of the world, whereas we humans are just their machines that they build to benefit their own survival. Take it away Dr. Dawkins...

“Was there to be any end to the gradual improvement in the techniques and artifices used by the replicators to ensure their own continuation in the world? There would be plenty of time for improvement. What weird engines of self-preservation would the millennia bring forth? Four thousand million years on, what was to be the fate of the ancient replicators?

They did not die out, for they are past masters of the survival arts. But do not look for them floating loose in the sea; they gave up that cavalier freedom long ago. Now they swarm in huge colonies, safe inside gigantic lumbering robots, sealed off from the outside world, communicating with it by tortuous indirect routes, manipulating it by remote control.

They are in you and in me; they created us, body and mind; and their preservation is the ultimate rationale for our existence. They have come a long way, those replicators. Now they go by the name of genes, and we are their survival machines.”