[QUOTE=Valteron]
Wesley, the two mistakes people make about evolution are to either dismiss it outright because they think it contradicts their belief in God (as with creationists) or else to make it an omnipotent God-substitute, which you seem to be close to doing.
Evolution is nothing more than a mechanism that operates without any reference to purpose, direction or morality. Simply put, it is the explanation of how things work, and nothing more. I may explain to you how a power mower works. The fact that that a careless user of that mower may someday take off a kid’s foot has nothing to do with that mechanical explanation.
May I tell you what I consider to be one of the most charming and amusing theories in present evolutionary science? At one time, it was assumed that in human evolution, human females developed larger birth canals to let through babies with larger heads (with more brains in them). Even today, if you have ever seen a cat or cow or dog give birth, you will notice that letting out the head of their newborn is no problem at all. Now just ask a human female who has given birth what it is like letting out our giant mellon-heads!
In other words, it was assumed that the trend to larger brains put pressure on the species to develop wider birth canals because (horrible as it sounds) every time a small-opening female tried to give birth, she died in labour with the big-headed kid still stuck in her. Over many generations, wide-canal females survived better and had more offspring with big brains.
Since walking upright requires a wider pelvic gridle, it was assumed that two-legged walking was a result of this same evolutionary pressure, because females with wide pelvises could BOTH walk upright more easily AND died less in chilbirth .
That was the old theory: Bigger brains require wider pelvis to keep females from dying in childbirth, and wider pelvis lets members of that species walk upright more easily. It seemed to make sense.
Imagine our surprise when discoveries of fossils of early ancestors and proto-humans in Africa showed that they walked perfectly upright millions of years before their brains started to get bigger! The upright stance and the wider birth canal are there, but the offspring’s heads were just as small as before. Females of the period must have just popped out those newborns like a pit out of a boiled peach!
So upright posture led to wider pelvic openings, but just as a side-effect. The babies popping out of those wider openings would not have much larger brains until many generations later. Kind of like a garage with a two-car door and all you park in it is a motorcycle. But over the years, the advantage of larger brains in survival started to favour bigger and bigger brains. And luckily, the larger birth canals acquired eons earlier did not prevent this development.
But then why did the two legged-stance develop at all? Well, it is now believed that it was the result of forests disappearing in a drier climate that favored grasslands. Apes almost always walk on all fours. But in tall grass they can stand up to see if a predator is coming, or to look for a nearby tree to run to, and even take a few poorly-executed steps on their hind legs.
As our ancestors started living more and more in grasslands the ability to stand up and to stay standing, and even to walk upright, was heavily favoured by evolutionary survival needs. Four-foot “conservatives” did not see the leopards and lions coming and could not spot places to run to. They could not see the other members of their group above the grass to see how they were reacting and where they were fleeing. And two-legged apes can sprint faster than four-legged on flat ground.
So why do I find this story so charming? Because it is so typical of the completely random and unplanned nature of evolution. We like to think that human intelligence was something “meant” to happen. In fact, our larger brains are only the accidental by-product of two-legged walking that developed for a reason entirely unrelated to brain size.
So here is the punch line to this rather long story. The reason we have moon landings and space exploration, the reason we have Newtonian phsics and computers, medical science, the Parthenon, the Taj Mahal, the theory of relativity Beethoven’s Ninth symphony and Plato’s Republic is that a few million years ago, some ape-like creature wanted to keep from getting his/her ass chomped by a leopard. Hilarious, is it not?
But that is just how evolution works.
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I know evolution is pointless though, and I’ve pondered exactly what you’re referring to. However I’ve always heard we became smart just because several million years ago Africa’s climate changed and suddenly we lived in an environment that was full of faster & stronger predators, so we evolved intelligence and toolmaking to survive and compete. Had we not walked upright perhaps we never would’ve evolved intellect and we would’ve gone extinct.
Right now scientists work with genetic algorithms to try to solve engineering problems. If you set up parameters for a jet engine and tell the computer to ‘evolve’ a jet engine out of hundreds of component parts arranged in different fashions after 200 generations or so you get a more efficient jet engine than the one you started with. The parameters of evolution as we have lived it are to survive and reproduce, and behaviors, outlooks & morals that promote that get passed on. We are no different than the computer programs, we are just really good at what we are designed to do, which is survive.
My real concern is that I don’t know how we find meaningful morals, if we are even capable of meaningful morals, or what. If I give money to help end childhood mortality in Africa, I am just promoting survival of the group I identify with (humanity as a whole). Yeah I’m helping to end pain and misery, but the only reasons those pains and misery exist in the first place is because they help us survive as individuals & as groups. Where do you turn to to find meaningful standards in that situation?
If we were all living in a genetic algorithm computer program and we were evolved to be efficient jet engines but we got lucky and became technologically proficient enough to escape that program, where do we turn to find new standards? You can’t just go on following those standards, trying to be the best jet engine you can be because those standards are totally amoral and brutal.