Will humanity ever discover everything we need to know about planet earth? I ask this because I know the answer is no, but I do want to know if people will eventually learn so much about the world that people will end up discovering everything they need to know. And that finally, someone can just tell us why we are here. Scientists believe evolution is the reason why people exist but what about the clear history of humanity? So I guess the real question is why do we question something we already know the answer to?