Humans will always continue to evolve just like any other species. We will never "defeat" evolution entirely. However, we have had a definite influence on it. We have redefined what exactly classifies as survival of the "fittest", but we have not removed the concept entirely. People still die everyday from making stupid mistakes... whether it's a car accident, or an execution, or a suicide bombing, or a drug deal gone wrong, the list goes on and on. I'm sure plenty of you have heard of the
Darwin Awards. So the fittest are no longer necessarily the physically strongest, but are instead those who have the greatest mental capacity. Smart people know how live their lives without getting killed... and yes, we're talking about extreme generalizations here. Those who have a stronger will, better problem solving capabilities, and are more observant have a better chance of survival than those who are lacking in one or more of those abilities. Realize though, that evolution is an extremely slow gradual process. It isn't something a person can directly observe during their lifetime, and that's why people fail to understand that it is always happening.