Here’s a great article from Evolution News that explains the
trouble that Darwinian evolution has in building up to
functional new biological information by using a process of
random mutation and natural selection. Casey Luskin takes a look
at a peer-reviewed paper that claims that Darwinian evolution
can do the job of creating new information, then he explains
what’s wrong with the paper. In Wilf and Ewens’s evolutionary
scheme there is a smooth fitness function. Under this view,
there is no epistasis, where one mutation can effectively
interact with another to affect (whether positively or
negatively) fitness. As a result, any mutations that move the
search toward its “target” are assumed to provide an immediate
and irrevocable advantage, and are thus highly likely to become
fixed. Ewert et al. compare the model to playing Wheel of
Fortune: The evolutionary model that Wilf and Ewens have chosen
is similar to the problem of guessing letters in a word or
phrase, as on the television game show Wheel of Fortune