Taking on presuppositionalism (PS) gained Gene Witmer fame and fortune! Well, at least the former, but the latter is surely on the way.
BTW, I'm the guy at the PhilSoc meeting who brought up the question that led him to write the paper and do the talk. He also did a radio spot as a result of those.
If you aren't familiar with PS, see this comparative anatomy of apologetic methods by a PS proponent.
