One of the characteristics of a pseudoscience is repeating discredited arguments as though they were new. And sure enough, once again an Intelligent Design Creationist is flailing around trying to discredit research in digital evolutionary models that shows that structures displaying IDC’s central concept, irreducible complexity, are evolvable via Darwinian processes. I have previously looked at earlier attempts to discredit that research; see here and here for examples.
Now it’s happening again. This month, Winston Ewert, affiliated (according to the paper) with the Discovery Institute’s Biologic Institute (though he doesn’t appear on their published list of personnel), published a review and critique of several computer models of evolution in the DI’s captive journal Bio-Complexity. Ewert was a graduate student of Robert Marks at Baylor, where he was associated with Marks’ and Dembski’s Evolutionary Bioinformatics Lab. He now has a Ph.D. from Baylor, the first in Baylor’s combined electrical engineering and computer science graduate program.
In his critique Ewert looks at five programs: Avida, Tom Schneider’s Ev, Dave Thomas’s Steiner tree GA, Suzanne Sadedin’s geometric model, and Adrian Thompson’s “digital ears”, a program realized in field programmable gate arrays. Here I will analyze Ewert’s critique of Avida; I am less familiar with the other models Ewert discusses. However, given the errors I find in his discussion of Avida, I am very dubious with respect to his analysis of the other programs. If he does so badly with something I know pretty well, why should I trust his judgement in areas I don’t know so well?
After repeating an introduction to Avida that I wrote some years ago, I will follow (roughly) Ewert’s analysis, in which he first describes all five programs and then criticizes them. Hence, I’ll look at Ewert’s description of Avida, and in particular note several errors in it, and then I’ll evaluate his criticisms. I find that his description is faulty and his critique ill-founded.