New book explains how evolution really works, rebuts intelligent design

New book explains how evolution really works, rebuts intelligent design: "For example, one might think that a mutation that makes the neck of a giraffe longer would have to be accompanied by several other mutations, one that expands the length of the muscles of the neck, another that makes the blood vessels longer, and so on. But instead, the muscles grow to fit the length of the bone and the blood vessels grow until all the muscles have a sufficient supply of oxygen. Apparently very complex adaptations can therefore be achieved with few, simple mutations."