David is an educator, retired from working with the US Marine Corps. While working at the Marine Corps Institute (MCI), he introduced critical thinking to the officer and enlisted military professional education distance learning programs. Later, he also developed and field tested a critical thinking course, using this volume as a foundation, for a privately-run summer education program. The students involved in the field test were from middle and high school. He has other volumes in this series including "'Snipp, Snapp, Snute saa er eventyret ute' - Folklore Reader and Critical Thinking Workb...