I'm not sure Eric is denying common descent
Well, he says:
Many present all evolution as similar to how wolves changed to sheepdogs, or the way in which bacteria develop resistance to penicillin, but such change will not create radically new protein complexes or new species.
If he doesn't believe that species can become other species, he can't believe in common descent (unless he believes that the changes in species happen when scientists say they happen, but he attributes this to God).
unless he believes that the changes in species happen when scientists say they happen, but he attributes this to God
This is approximately what many Christians believe. (The idea being that the broad contours of the history of life on earth are the way the scientific consensus says, but that various genetic novelties were introduced as a result of divine guidance of some kind.)
I'm not sure whether this is Eric's position. He denies being a young-earth creationist, but he does also make at least one argument against "universal common descent". E...
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