How different is macro/micro evolution

I've heard it said from some that Macroevolution is a much different and more complex process than Microevolution. (Some creationists would say it's impossible)I've also heard it said that they are essentially the same process, most notably by Crashfrog....

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I'm not convinced that macroevolution is any different than microevolution, no more than walking to the store is fundamentally different tha[n] walking ten miles

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So how different is Micro/Macroevolution.

What exactly do you mean by...

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different levels of selection

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...?

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maybe a tiny selection level would be getting thicker hair.
major, or really large, selection level would be surviving the K-T extinction event.

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Yeah that's what I was thinking he meant (something along that line)but it seems to me that they both affect the population and the individual. I can't really think of any selection that would affect the population much differently than the individual.