<human>: Can you give me the gist of the text in a nutshell?

In most movies, aliens from outer space are creatures coming to Earth and it usually ends in a battle. Well what if the "aliens" were from Earth? 
I thought about Darwin's theory of evolution and thought, "Hey us humans evolved, doesn't that mean other animals can too?"
So do you think IF any animal would evolve enough to be considered an "intelligent life form" the Earth would suffice to both humans and the other creatures home?
Also since this would be a huge evolution it would probably take thousands of years if not millions, so do you think the government would actually allow these animals to continue to evolve?
<bot>: Do you think if an animal species was evolving to be as smart as humans, the government would allow them to keep evolutionizing?