Thanks, Wes. That helped! Can you recommend a book from the presuppositional "camp" ? Do you know where R. C. Sproul stands on this issue? I have been told that he is an evidentialist, but I read and listen to him a lot and I haven't picked up on that myself. (That probably has more to do with my lack of understanding of the issues than his clarity, though.)

Trust the past to God's mercy, the present to God's love and the future to God's providence." - St. Augustine
Hiraeth