Problems

Comments of a writer who identifies himself as "not a creationist."

Evolution also suffers from the problem that many putative sequences which look logical based on the progression of one set of anatomical characteristics suddenly look illogical when attention is switched to another set. For example, the lungfish superficially seems to make a good intermediate between fish and amphibian, until one examines the rest of its internal organs, which are not intermediate in character, nor are the ways in which its eggs develop. And if different species have common ancestors, it would be reasonable to expect that similar structures in the different species be specified in similar ways in their DNA and develop in similar ways in their embryos; this is frequently not so. So evolutionary relationships depend upon an arbitrary choice of which characteristics of the organisms in question are considered most important, and different relationships can be "proved" at will (Locke, "The Scientific Case Against Evolution", A Review of Michael Denton's "Evolution: A Theory in Crisis" & Michael J. Behe’s "Darwin’s Black Box").