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Originally Posted by DucoGranger
Regadless of there being a "wall" or not Im not convinced of anything creating anything drasticaly different.
in natural selection, species don't drastically change. it's a very slow and gradual process. it's hard to comprehend the amount of time involved. our lives feel like a long time and they are the blink of an eye on evolutionary time scale.
a good analogy is the process of growing up from a child to an adult. there is no obvious point in time when you can say a person has transitioned into adulthood. looking at them from day to day you can't even tell they have changed at all. but if you take a picture of them when they are 14 and then again when they are 44, you can tell they have changed.
that's how evolution works, but instead of taking place during decades it takes place over hundreds of millions of years. you don't look like a fish, but if you trace your family tree back half a billion years, your ancestors were swimming around in the ocean.