Evolution is becoming a contentious and increasingly-political topic, and it’s becoming one of the places where the world of science intersects with the world of politics. Unfortunately, the cultures of the two worlds are very different, and the intersection can be rather ugly. Science is the realm of facts and politics arguably that of opinion. You see this very clearly in the ‘evidence’ (such as it is) that gets presented in debates on the topic of evolution. All too frequently, these get hung up on the issue of fossils.
Now, fossils are fascinating things, and I don’t suggest otherwise. They have a lot to add to our knowledge and they give us a unique window into the lost world of millions of years past. However, they are not the be-all and end-all of evidence for evolution. Another important source of the evidence is anatomy, both human and not. There are some aspects of physiology that just don’t make any sense outside of an evolutionary context.
Consider, for instance, the coccyx and the fovea.