Evolution or Darwinian concepts, state that a living organism will evolve to it's habitat. When an animal has evolved to a specific geographical areas climate and food supplies then the natural need to evolve no longer exists. Climatic changes induce the need evolve or adapt some more, hence why the evolution of species is not linear, and some haven't changed for millions of years i.e. Crocodiles. We have as a species have evolved, but now I believe that evolutionary road for our species is at an end, simply because we no longer need to adapt to new enviroments, we adapt our surroundings to suit ourselfs. Without Darwinian evolution life could not exist, life couldn't adapt to climatic change and would therefor die. Creationist"and the earth is only 6000 years old" thinking is in contradiction to this which is a good reason why I'm not religeous. As for the missing link, we don't even have a complete catalogue of everything that is alive on this rock yet, so why be surprised when we don't know what happened 2,000,000 years ago.