Do you know Van Til? Here is a chance to familiarize yourself with Van Tilian thought in five minutes. Here are two brief articles I wrote in 2007 attempting to offer briefly an introduction to Presuppositional thinking. Also, I am linking to a brief third article introducing Van Til by a friend of mine who studied under John Frame together with me in seminary. Joe is a much more refined Van Tilian than I. If you have only three minutes, read his.