I have no doubt that Dr. Saunders is informed about his discipline but the arguments he presents here are weak.
In recent years, these molecular animations have allowed us — for the first time — to peek inside the world of the cell.
Picture an Ouroboros, the alchemical symbol of a snake with its own tail in its mouth. Do you get the feeling that Darwinian “logic” is taking us nowhere?
How do we account for the vast diversity of particular proteins with particular functions, if functional conversion between proteins is difficult (or impossible)?
It is important, in evaluating these arguments, that one consider all the evidence: not just the evidence that is consistent. It seems to me that when this is done, the arguments for common descent — certainly in its universal sense — are, at best, inconclusive.