When the first brain came out of the sea the first thing it grew was a pair of lungs. |
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Okay so I will start off saying this thread is not here to prove or disprove evolution. All it is here is for our understanding. Okay so here is what I think is a paradox in the theory of evolution. My wording may be bad because I'am known at being a very bad ex-plainer, so please bear with me. We call all body parts that are movable (hands, arms, legs, neck etc...) plus all of our five senses (these five senses aren't that important in the paradox) group1. My question is which one evolved first the brain or group1? |
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Silence & smile are two powerful tools.
Smile is the way to solve many problems & Silence is the way to avoid many problems.
When the first brain came out of the sea the first thing it grew was a pair of lungs. |
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I suggest you read a book or two, you don't seem to know much about evolution. |
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As mentioned before, the brain evolved first, and the appendages evolved from older appendages used for something else. Srsly, buy a book. |
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The brain. It's not a guess either, it's easily shown in the fossil record. The first fish, looked like this: |
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you guys suck. Your answer is "read a book"... the guy's asking a question here. |
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The theory of evolution does not say that an animal just suddenly grew arms and legs, or suddenly grew a brain. That's what creationists think that the theory states. |
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---o--- my DCs say I'm dreamy.
It's true that simultaneous emergence of brain and motor capabilities is not realistically possible. As is always the case of evolution, a feature must exist in some useful capacity beforehand, and a change gives that feature a new and very useful function. |
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Last edited by Xei; 07-19-2011 at 05:05 PM.
I'll keep that in mind. |
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Darwin's theory of evolution would state that the correct answer is neither. both would have evolved together as you need the brain to augment the movement of limbs as well as to learn new skills. |
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Wow. Welcome, amy! |
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Single cell organisms don't have brains but they are still capable of moving around. Moving really isn't all that difficult, and you don't need a brain for it. If you are in water, you don't even have to move, you will float around with water currents. |
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Thank you for the guys who replied with some valuable information, especially xei. |
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Silence & smile are two powerful tools.
Smile is the way to solve many problems & Silence is the way to avoid many problems.
Amoebas are single cell creatures that can move. They just kind of like stretch out and drag them self along. Then when they encounter something them wrap their body around whatever and pull it inside them. Can't get any more simple than that. |
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The reason u don't understand is because you think consiousness is in the brain. It's not. Just because a jellyfish doesn't have a brain doesn't mean it has no sense where it's going. It's in the water so some senses aren't needed. A jellyfish has an electrical defense system. And probably when it gets close to something it senses it and flees/attacks. |
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The question required that we think about complex organisms, an amoeba has no senses as such so therefore wouldn't fit the original description given in the proposed question leading the thread. |
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Well that is the problem, you can't think about it in complex organisms. Once you have a complex organism, you already have all the pieces. If you already have a basic brain and a basic sensory organ and basic modes of movement, then it is easy to imagine how it all evolved together at the same time, because really they are just all improving at the same time. Which is entirely possible and makes sense. |
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Some things to keep in mind: before the brain we had clumps of cells that told other cells what to do. Or ganglion. You can even find ganglia in plants. So the evolution of clumps of cells telling other cells what to do happened early on in evolution. Very early on. Single cells can be extremely complex, with thousands of micro-parts. They may not have brains, but like plants, they can still sense their environment and react. Even if their reactions are only binary. |
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Actual answer to the 'paradox': you're wrong and there is no paradox, just a set of assumptions and misunderstandings. Alric's post is spot on; you're looking at a very complicated end product instead of the simple beginnings. |
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Okay I see what I did wrong, I explained it very badly (just like I said I'am bad at explaing) |
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Silence & smile are two powerful tools.
Smile is the way to solve many problems & Silence is the way to avoid many problems.
A creature constantly roaming will patently spread out much faster. If they're just moved by the tide then overpopulation will cause a lack of food and the creatures will be stuck with that for a while. If they're moving all over the place this isn't a problem. |
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