To: Krowbar who wrote (25946 ) 11/15/1998 11:15:00 AM From: E Read Replies (1) | Respond to of 108807
Hi, Delbert. Here, pasted from a msg I posted to Rick on Sept. 14, are some quotes discussing how evolution works-- over millions and millions of years. I'm sure you'd enjoy this book, btw. It's actually a response to an earlier post by Bob Sturgeon. I am going to answer your post by quoting from Robert Wright's The Moral Animal, one of my Top Ten Most Interesting Books Ever and Fun To Read, Too. It's subtitle is "Why We Are The Way We Are: The New Science of Evolutionary Psychology." He begins this section with a quick explanation of Darwin's theory of natural selection... then answers, in effect, the questions you raise about how marvelous entities came to be. I am taking the liberty of "bolding" the parts I think are most responsive to your point. The argument is much fuller and clearer in the book, but even this length is going to make everyone but you click right by it! and look at all the typing I did... Quote: "Fitness" is the thing that natural selection, in continually redesigning species, perpetually "seeks" to maximize. Fitness is what made us what we are today. ...Your entire body-- much more complexly harmonious than any product of human design-- was created by hundreds of thousands of incremental advances, and each increment was an accident; each tiny step between your ancestral bacterium and you just happened to help some intermediate ancestor more profusely get its genes into the next generation. Creationists sometimes say that the odds of a person being produced through random genetic change are about equal to those of a monkey typing the works of Shakespeare. Well, yes. Not the complete works, maybe be certainly some long, recognizable stretches. ...Suppose a single ape gets some lucky break-- gene XL, say, which imbues parents with an ounce of extra love for their offspring, love which translates into slightly more assiduous nurturing...So long as this thin advantage holds, the fraction of apes with gene XL will tend to grow, and the fraction without it will tend to shrink... ...Thus does natural selection beat the odds-- by not really beating them. The thing that is massively more probable than the charmed lineages ["charmed" meaning the ones that over eons proved the fittest, and survived. E.] that populate the world today-- an uncharmed lineage, which reaches a dead end through an unlucky break-- happened a massively larger number of times. The dustbin of genetic history overflows with failed experiments, long strings of code that were as vibrant as Shakespearean verse until that fateful burst of gibberish. Their disposal is the price paid for design by trial and error. But so long as that price can be paid-- so long as natural selection has enough generations to work on, and can cast aside scores of failed experiments for every one it preserves--its creations can be awesome. Natural selection is an inanimate process, devoid of consciousness, yet is a tireless refiner, an ingenious craftsman... Unquote [Apologies for the length of this. Think millions of years! E.]