2 things:
1: It's still a house, not a car or plane.
2: You ignore the possibility of a changed piece being replaced again by the original.
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Look at at an Ape, now imagine it a bit thinner and smaller arms and longer legs. That is close to Our common ancestor. It did not evolve from a fish... Well it did but.... Oh -blam!- it
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Look at the ape. Imagine it weaker, with fur that cannot keep it warm in winter. It loses it speed and dexterity in tree climbing. It can no longer eat certain foods anymore, and it chokes easily. All in all it has devolved. Aside of mental complexity and social, or maybe not, behaviors, man would not be considered a positive evolution from apes. Also fish to apes is even more far fetched. What do you say came before fish, and before even that? I thought that scientists just ditched the Big Bang idea.
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Evolution is merely the alteration of genes that ultimately results in the genes that prove effective surviving to be reproduced while the inferiors die off, so technically, humanity's mental capacity outweighs the tree-climbing stamina possessed by apes
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Then do you believe that we all came from a magical entity in the sky?
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Edited by BenjyX55: 5/10/2015 8:54:08 PM1: maybe is a motor home or a house boat 2: out of 10000+ pieces? Doubtful that it would happen consistently.
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1: a house is still a house just like a dog is still a canine, a monkey is still a primate, and man is still a Human. 2: Field tests show that it happens more often then not.
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Edited by BenjyX55: 7/18/2015 3:18:22 AMA motor home is a house. It's also a car. It's comparable to the first amphibians. They were still very much like fish, but also like reptiles. An organism has more than 10000 pieces. There are trillions of base pairs in a single cell's DNA. And yes, sometimes changes do occur that might appear to be evolution going backwards, even though it has no direction.
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That's not backwards. That's just more change. You're assuming evolution has a direction. The only direction it has to male things different over time.
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The point is that chordates went from fins to legs and then back to fins.
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It still isn't 'going backwards' despite reverting to a previous state. The fact that a species manages to survive regardless of the path of evolution it has followed represents those genes successfully sustaining the species for a prolonged period of time. It all comes down to what conditions an area proves optimal for survival, and if that means fins are better than legs, then that's exactly what the best surviving species will eventually do
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Yes but the fins are not at all the same. The function is the same, but the structure is not.