(It says, "Nothing says 'I'm an idiot' than trying to one-up someone with better credentials than you.")
Yes, Megan McArdle is commenting on someone else's appeal to authority, despite her own deeply ingrained habit of doing the same thing.
For once I have to agree with McArdle. In fact, this tweet reminds me of a terrific comment made by aimai, in response to McArdle's famous claim to be the heiress to great knowledge:
McArdle, to a commenter who had the temerity to correct her errors:
You never had any realistic hope of intimidating me into conceding to your superior intellect, because as I mentioned, I come from a family of academics who are actually intellectually intimidating. But any hope you had was long ago squandered in our various interactions, where you have demonstrated a tediously mechanical grasp of talking points you've heard elsewhere, an imperfect familiarity with your intermediate coursework, and what seems like some sort of nascent personality disorder.
Hm, lets see if the site lets me post. Can I ask whether this long, incoherent and off point attack by Megan on poster zosina is, in fact, by Megan? I mean, look--for one thing the "Megan" in this post claims to be the child of academics when the real Megan, as far as I know, is the child of a former public employee turned lobbyist and a realtor. Second of all the real Megan presumably grasps that "being the child of academics" doesn't actually amount to an argument. No, really it doesn't. Actually, and for real, I'm the child of a Nobel Prize winner and for kicks I'll add I'm a third generation Harvardite. So what? This really, really, really, never comes up in academic arguments which are actually won and lost not by some kind of bizarre blood test but by concrete arguments. The "you are tedious and lack charm" argument is also one that I have yet to see adduced in a respectable discussion. Certainly, on the basis of the evidence from this thread, its hard to tell which of the two of you, the "megan" poster and the zosina poster is the younger. If I didn't know that the real Megan is 37 I'd have had to award this avatar the palm for most juvenile approach to intellectual discussion. Finally, I have yet to see the imaginary comments "Megan" refute any of Zosina's points. If this thread "Megan" isn't the real Megan I think the real Megan might want to step in and clean up the comments by deleting her. But if she is the real Megan I think the Atlantic might want to step in and jerk the blog entirely. This is a positively craptacular piece of incoherent special pleading on Megan's part, from the first post to the comment thread. Really, its shameful. And you don't have to be the "child of academics" to know that.
Heh. That never gets old.
McArdle's utter lack of self-awareness contributes greatly to her inability to understand both her actions and her motivations for those actions. She chooses to believe that she is a respected public intellectual because she is terrified to take a good look at herself and find out the truth. It makes her a perfect patsy for David G. Bradley.