Originally posted by: Rainsford
Originally posted by: uli2000
Originally posted by: joshsquall
I've never understood how people can't believe in evolution. It's not a controversial subject.. it's just logical. I think most people who don't believe in it don't really know what it is.
Here's what keeps me from fully embracing evolution. If we evolved from apes, I'd expect one of two things:
1-Apes would continue to evolve and we would have the 'in betweens' (cro-magnons, neaderthols, alot more of the geico cavemen) living among us today.
2. Being human>being ape, so all the apes would have evolved long ago into humans.
But there are no real 'cavemen' living among us and there are still apes. Why did evolution all of a sudden stop?
Common ancestor. Humans did not evolve directly from apes, it was probably a branch from a common ancestor. That really answers both your questions if you think about it, but I'll do you one better.
The answer to your first question is that, up until very recently (relatively speaking) there WERE "in betweens" living with our own species. The reason there aren't STILL "cavemen" among us today should be obvious, they wouldn't be able to compete. There was competition for who would be the dominant "human" on earth, and our species won.
As for why apes didn't keep evolving into cavemen and or humans; evolution is not a path that every animal walks equally. Species branch, and evolve differently, and the conditions that created humans in the first place might not create the same thing again...apes haven't stopped evolving, and neither have humans for that matter. It is not a simple deterministic process.
The main thing to keep in mind is that evolution happens EXTREMELY slowly on our time scale. The most recent "caveman" is thought to have lived about 18,000 years ago, relative to the amount of time modern humans have been evolving, cavemen DO live among us today. The entirety of recorded human history is a blip on the evolutionary time scale, it shouldn't be surprising that nothing has changed in all that time, we haven't waited long enough.