 After all I share 99.9% of my DNA with J. S. Bach, but that fact carries no implication of a close correspondence between our musical abilities"(p45).He suggests that "while natural selection has been an important factor in the development of life on Earth, it is by no means obvious that it is the only type of process involved" and that "the attempt to force classical Darwinian thinking into the role of an explanatory principle of almost universal scope has proved singularly unconvincing as it seeks to inflate an assembly of half-truths into a theory of everything".He believes that Evolutionary epistemology is also based on a half-truth.