Just kidding, I'm not going to launch that debate again. Instead, I
stumbled across an excellent overview of that apologetics approach
from Libby Anne; unlike my quick introduction, it goes into more
detail on the problems with that worldview, from someone who's both
better at writing for a general audience, and who actually walked the
apologetics beat for a while.
"Interestingly, this emphasis on maintaining a persuppositional
worldview is is why Vision Forum and others like it see secular
colleges and secular sources of knowledge as dangerous. For them,
facts and evidence are not neutral, but are interpreted through an
assumed worldview. Therefore, a Christian should never study under a
non-Christian, because what he will be learning falsehoods, not truth.
One can only learn truth by studying under other likeminded
Christians. The insularity this produces is overwhelming."
http://www.patheos.com/blogs/lovejoyfeminism/2011/09/evidentialism-v-presuppositionalism.html
HJ Hornbeck