Darwin Today

Sometimes these things just come to me, what can I say. At any rate, to what extent, if any, is our current society/world/culture still, if at all, running under the general rules of survival of the fittest? If we are, how has the definition of 'fitness' changed? Is this necesarily a good or bad thing? What do you think?

Depending on what you believe this could be a sensitive subject so please keep all comments respectful.