If reproducing is our "ultimate goal" in life, is it possible that evolution made an "error" of some kind by allowing us to think? Biologists say that evolution happens to allow a species to thrive more than it previously did, and that evolution experiments with combinations of properties that species have. Is it possible for evolution to undo our ability to think? Could you say according to this theory that instead of the human species being smarter it has actualy masked itself from its ultimate goal by being able to ponder the question "why?". These days, some people have no plans of creating offspring because they can choose whether or not they want to have children, and I believe choice is a product of thought. Is this theory plausible?