Just for those who haven’t had enough, David Janes has one more post on evolution, and its falsifiability.

His focus is on the fundamental tenet that we are all descendants of a common ancestor, which implies that speciation has occured in the past, even if no one has actually seen it happen. (Hint to lawyer Orrin Judd–it’s called circumstantial evidence, which can often be much more powerful than eyewitness testimony…)