And, in fact, there are well established theories that, in part, disagree with Darwinism, punctuated equilibrium being a notable example. However, all of those, even the most extreme of them, are really just refinements of the basic theory of evolution that Darwin set down a hundred and fifty years ago. It used to be that scientific theories were thrown out of the window when a better one came along, but in modern times, it seems that we are getting closer and closer to the truth, rather than hitting random spots.