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copy and paste somebody else opinion is awesome. There is no facts, just opinions and wishes.

It's an explanation of how monkeys and humans could both have evolved. Everything about the world hasn't been figured out yet, so different explanations have been made -- some false, some true.
If different isolated groups evolve differently, that validates the claim in the yahoo post. This isn't just a mere opinion, but an a posteriori reasoning.

If you want proof, here are five: http://evolutionfaq.com/articles/five-proofs-evolution

The strong evidence, for the theory that we did evolve from a common ancestor with the chimpanzees, as stated in the evolutionfaq.com link, is that we share 96% of our genes with it.