Karl Giberson and Francis Collins Commit Berra's Blunder While Arguing for Macroevolution

In their new book The Language of Science and Faith, Karl Giberson and Francis Collins argue that "the distinction between micro and macro evolution is arbitrary." (p. 45, emphases in original) As a result, they assert that "macroevolution is simply microevolution writ large: add up enough small changes and we get a large change." (p. 45) What's most incredible is not that they make this claim (which is common in evolutionary writings), but the examples--or lack thereof--they give to back ...