"What Would Disprove Evolution?"

For a change of pace, Jerry Coyne at Why Evolution Is True turns his attention to the issue of evolution. In a post titled "What would disprove evolution?," he observes: "If evolution is a scientific theory worth its salt, then there must be some conceivable observations that could show it to be wrong." True!

Two comments on Coyne's list. He writes, "Here are some of those conceivable observations:"

Fossils in the wrong place (e.g., mammals in the Devonian). If the fossil record were all out of...