The one thing keeping me from being a complete evolutionist and atheist is how intricate the human body is; I find it a [i]little[/i] preposterous that the complexity of the human brain is the result of a few mutations that happened by chance.
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What confuses me is if we evolved a high intellect for the purpose of survival then why do we have a mind of wanting truths rather than a mind of surviving alone? How is it that we evolved a free will? Why have no other organisms also evolved a high intellect? Why did we evolve to have a high intellect if people with the highest thought processing aren't even the ones who live the longest?
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We evolved a high intellect because it helped us survive obviously. This intellect was originally put to use in making tools for survival but now that we're comfortably at the top of the food chain this intellect can now be used for more abstract thought.
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Go read up on the evolution of the brain. It's not too far a stretch to believe we are here today if you believe small changes happened over time. People jump too high when they think of evolution, they always think of simple brains and immediately jump to complex brains. Instead imagine how hard it would be for a simple brain to evolve into a brain that is minutely more complex than that and that version goes on to a minutely more complex brain.