If evolution is correct....?

Question

Why havnt we evolves extra arms?Another set of legs? Eyes in the back of our head? Or the ability to be in two place at once?
Or how about wings so we can fly like birds(not mechanical assistance, WINGS?)? According to the amount of time evolutionist say we have been on the planet; shouldnt we have evolved some of theese things? Oh I know. Why havent we evolved and extra stomach?

Hmmm......Evolution seems to have some holes in it.No?

Answer 1

We haven't got extra arms and extra legs because we no longer adapt to environment, silly. Back in the days where human evolution was more noticeable, we were learning to stand up right. Well now we are becoming taller. Want evidence? In the 1930's, my grandmother managed to survive the depression by working at a shoe store. Back then, the average shoe size was a size 5, now it's a size 8. So people are getting taller. Some will say that's because of better medicine, but with the unhealthy way we eat, there is also evidence that we EVOLVED to this state, partially with the help of better living conditions.

There is no such thing as a perfect theory, but evolution definately has less holes than Creation stories.

Answer 2

Evolution is true. No reasonable person can deny the fact that all organisms and life, be it through the animal, plant kingdoms are subject to change do to the condition of environment. Changes overtime is must assuredly true, but we didn't need a theory to understand this, it's apparent in everything. However, there is dispute with the actual concept of natural selection and the theory that one species can become an entirely different one. That is where people have the must issue with. Personally for this to genuinely occur there has to be SPECIFIC environmental conditions and circumstances that go against the whole idea of survival of the fittest. At some point it sort of defeats itself, since it is dependent on a "good" mutation to happen, but there are no such things of good mutations, they are often bad. And a animal that would have the capacity to mutate I would gather they would be killed rather quickly by a predator or abandoned/rejected by it's own direct species. Regardless to the fact, I find Quantum Physics much more stimulating - proves mystical sage wisdom imo.

Answer 3

No.

>> Why havnt we evolves extra arms?Another set of legs? Eyes in the back of our head?

Evolution isn't directed. As Richard Dawkins explains it, evolution is the "Blind Watchmaker" - it can only produce small, gradual improvements that are beneficial to the creation of the watch. The funny thing is that the 'blind watchmaker' doesn't even know it's making a watch! It just knows that it's making improvements.

As for the reason we haven't "evolved" all those other things is that simply, we don't need any of them. Evolution only happens due to genetic drift, and natural selection. Natural selection implies that the thing that it discriminates against is things that are not productive - which, looking at it a different way, promotes beneficial change. But what is "beneficial change"? Well, that depends on which environment the organism occupies (known as an "ecological niche"). For instance, would fish have any use for legs? Would having legs help them escape predators? Most likely not - having legs would create drag in the water, slowing them down. Hance why you don't see fish with legs - they're quite slender and sleek so they can glide through the water. Likewise, for all your other improvements suggested, we don't (and haven't) needed any of those things - we have two perfectly functioning arms, we have two eyes already - there's no need to evolve more.

>> Or the ability to be in two place at once?

We are, if you're talking quantum mechanics.

>> Why havent we evolved and extra stomach?

Because we have no need for a multi-chambered stomach like a cow does. The cow needs it to digest grass. We don't digest grass, hence why we don't need extra stomachs.

Answer 4

Your knowledge of evolution is very elementary. Evolution is a process that explains how organisms developed into what they are today. One theory of evolution postulates that genes mutate and these genetic mutations create physical difference, some are beneficial, some are not. The individuals with beneficial differences will have a better chance to survive than those without, so they are more likely to pass on the gene (there's a lot more stuff going on here - this is a watered down version).

So a person like you described, with extra arms, legs, eyes and wings either hasn't come around yet (because the genes haven't mutated like that - it would probably take a lot of mutations) or a person has came around with different appendiges but these differences made it more difficult to survive and he/she died off. (very unlikely)

Answer 5

Evolution does not work in wild jumps, but gradual changes. Terrestrial vertebrates evolved on the four limb model with two eyes because that's what the fish that eventually invaded land had. Birds have two legs and two wings, but no arms. Cows have four stomachs and live to eat grass all day. Evolution isn't magic. The only hole is in your reasoning.

Answer 6

Um, no. I hope you are just being sarcastic because this isn't even close to what even rudimentary evolution instruction would teach.

Evolving species aren't going to just sprout arms or legs just because. We never had the need to turn arms in to wings like bats or birds. We don't need an extra set of legs, or arms. We don't need an extra stomach like animals that eat grass like cows do. We are changing in a few minor ways but there had to be environmental pressures or an species to evolve and we really don't have any. maybe if there is a global catastrophe like global warming or an atomic war we will see the pressures necessary to chge or go extinct but until then there won't be much change in humans as they are.

Answer 7

You have evolved very advanced eyes and an incredibly advanced brain. You have evolved very dexterous hands with precious opposable thumbs that allow you to manipulate your environment than build whatever you can think of in your big brain. You can talk as well. Is this not something?

Humans don't have wings but we still figured out how to fly didn't we? That should be a feat to be noted.

Answer 8

If environmental pressures dictated that three arms would be beneficial to survival then mankind could have evolved them. The problem with your argument is that three arms-another set of legs or eyes in the back of our heads would not necessarily be advantageous so there would be no need to evolve them. Mankind has what he needed to adapt to his environment and creationist arguments like yours do nothing to challenge evolution. I've seen half a dozen creationist arguments on this board today and without exception they have been facile and completely irrelevant to biological evolution-creationism is a dead duck.

Answer 9

Because all those things would cost extra metabolic energy, and there is no need for them. Our current form is ideally suited for our environment, therefore, you will not see much change.

However, more and more people are being born without wisdom teeth. There is a muscle in the leg that is no longer used in human locomotion, as recently as 100 years ago, nearly all humans had this muscle, now, only about half of humans do -- even though the anchor points on the bone remain. The average appendix size continues to shrink. In short, each succeeding generation reduces or eliminates things that are no longer metabolically important.

That's evolution for you.

Answer 10

evolution only favors mutations that are favorable to continuation of that set of genes. Most mutations are actually negatives - like siamese twins, people born without certain organs or limbs, etc.

For an adaptation to really become dominant, it needs to be a ftactor in which those who posess it have a reproductive advantage over those who don't over a long time-period.

there are cases of extra fingers, but they are not a biological advantage. Whole extra stomachs be an advantage? how?

also, simply because we did not evolve certain far-fetched possibilities does not invalidate others. We could have playing cards numbered 11 to 15, for a 72-card deck; that we do not does not mean playing cards do not exist.

So, no, evolution doesn't have holes in it, but your basis of assumptions seem to.