The Genetic Fallacy? (William Lane Craig)

Can you invalidate someone's belief by showing how someone came to hold it? Hear special guest Dr. William Lane Craig explain the genetic fallacy. Grab a copy of Dr. Craig's new book "On Guard" to learn more about this and other arguments on how to defend your faith with reason and precision. Recommended Book: http://www.amazon.com/Guard-Defending-Faith-Reason-Precision/dp/1434764885