RC Sproul's Magazine "Tabletalk" article by Stephen Meyer
Tabletalk: What is your book Signature in the Cell all about?
Stephen Meyer: It’s about what I call “the DNA enigma,” the mystery of the origin of the information in living cells and the closely related question of the origin of life, that is, the origin of the first living cell.
TT: Your book used discoveries about DNA to argue for intelligent design. Other scientists use the evidence of DNA to argue for common ancestry and naturalistic evolution. How can non-specialists evaluate these complicated arguments?
SM: First, the arguments are not actually that complicated. Most people can follow them if they acquaint themselves with a bit of basic biology. Second, it’s important to keep some basic distinctions in mind.
My book addresses the fundamental question of the origin of the information in DNA and presents intelligent design as the best explanation for the origin of the information necessary to produce the first life.
Those arguing for universal common ancestry and biological evolution are not addressing that question. Instead, they are typically comparing pre-existing genes (sections of the genetic text, that is, information) in different organisms. They assume that the degree of difference in the sequences of similar genes from different organisms indicates how long ago they diverged from a common ancestor. Whether readers judge the evidence that scientists muster in support of universal common ancestry to be compelling or not, they should recognize that scientists making these arguments are addressing a different question than I address in my book. My argument could be right and there could also be evidence for universal common ancestry, though I am personally skeptical of that thesis (see below).
In any case, a good book that evaluates the arguments for and against universal common ancestry is the supplementary textbook Explore Evolution: The Arguments For and Against neo-Darwinism. It will help readers who want to examine responsibly the evidence on both sides of that question.