[djmips]

> Kahng is the most prominent active researcher in this field. If anyone knows this stuff, it's Kahng.

This is written as a textbook example logical fallacy of appeal to authority.

[ok_dad]

The GP would have had to appeal only to the expert’s opinion, with no actual evidence, but the GP actually gave a lot of evidence to the expertise of the researcher in the form of peer reviewed papers and other links. That’s not an appeal to authority at all.