[mlc9852]

Why would only some evolve? What do you think the chimp-like ape thought when it gave birth to a human? How did the human survive with a chimp mother?

[CarolinaGuitarman]

"Why would only some evolve?"

Because only certain subpopulations within a species are subject to certain environmental pressures. If the environment is stable and is favoring the existing characteristics of a population, then stasis will be selected for.

"What do you think the chimp-like ape thought when it gave birth to a human? How did the human survive with a chimp mother?"

This is a creationist howler. No evolutionist thinks that evolution works in huge saltations. Speciation takes place in a population; the alleles in the population change in tandem. No two individuals in the population are very different than any other; they are all the same species. There is no magic moment when an individual becomes a new species. It's a process that is only evident after the fact, and it's the entire population that is changing, not just an individual. If the genetic links that existed between the subpopulation and the parent species are severed, then a new species is born.

BTW, nobody is saying we evolved from chimps either. Another creationist whopper.

[Physicist]

Why would only some evolve?

Everything evolves. Chimps and humans evolved along different paths. Chimps look, morphologically, similar to the last common ancestor, but make no mistake: chimps have definitely evolved since then. (The fact that there are two species of chimp alive today makes that clear.)

What do you think the chimp-like ape thought when it gave birth to a human? How did the human survive with a chimp mother?

It never happened that way. It was a gradual change over time. Look again at how the skulls gradually change over several million years. (Yes, I know you reject them as fraudulent. But if someone did accept them, what would he have to conclude?)

Think of it this way. Thousands of years ago, people spoke Latin. Today, their descendants speak Italian. Do you think that there ever came a time when a Latin-speaking mother was unable to communicate with her Italian-speaking children?