A puzzle for the readers of the NonSequitur.
Colin, John and I will be attending the upcoming Ontario Society for the Study of Argumentation (OSSA) conference in the coming weeks. We're presenting a version of the Subjunctive Tu Quoque argument (Colin blazed the trail here).
To the point, I'm slated to comment on a paper with the thesis that there are virtuous circular arguments. I've posed a challenge to the author, with the following argument:
P1: There are no virtuous circular arguments.
C: Therefore, there are no virtuous circular arguments.
The challenge is to explain, if there are virtuous circular arguments, what is wrong with P1 being used to support C. Of course, the author doesn't get to say that P1 begs the question.
Is this out of bounds? Moreover, if the challenge can't be met, what follows?