Think of it this way: suppose being taller gives you an edge. If two tall people marry, they get to push for tallness while having that gene-checking to get rid of some horrible mutations.
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Originally Posted by AliceNWondrland
What about the fact that humans are getting taller,
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I'm pretty sure this is due to diet. I'm 70% sure I remember reading this somewhere: people used to be taller, got shorter when agriculture first started out (humans turned to it out of desperation and weren't that good at it), and now with excellent nutrition during childhood, we're catching up again.
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Originally Posted by Watts
No, I'm not. Look at the dictionary definition that RR posted. Evolution is the process of change that results in more complexity, and only sometimes (as in rarely) results in beneficial traits. Again, you're just assuming that evolution is a step upwards.
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It can result in less complexity too.
Jam it back in, in the dark.
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How Unfortunate