Wohlrapp's concept of justification

The first two sections of this paper jointly comprise an edited version of the commentary I presented in the panel discussion of Harald R. Wohlrapp, The concept of argument: A philosophical foundation at the OSSA 11 conference, May 2016. My principal focus was on a claim Wohlrapp makes about the extent to which his concept of justification is "reconcilable" with the views of current philosophers about justifications. Following the conference, Wohlrapp sent me a response to my commentary. In section 3, I report and reply to three of the comments he made in his response.