Since the 1990s, Mark has worked closely with RTB in a variety of roles, including volunteer apologist, president of the RTB Los Angeles, CA Chapter, and regular instructor of the Critical Thinking Skills course for Reasons Institute and Hope International University. He served as an RTB local visiting scholar at RTB headquarters, helping develop resources to improve the critical thinking skills of Christians and applying philosophy of science to Christian apologetics.
Mark has taught critical thinking and problem solving in the government sector (primarily to managers) and has made presentations on apologetics, critical thinking, and philosophy of science to church groups and other Christian organizations. Mark is a contributing author to the RTB book Thinking about Evolution with coauthors Anjeanette Roberts, Fazale Rana, and Sue Dykes.
After 36 years in law enforcement, including 15 years as a police executive, Mark retired from the Los Angeles Police Department as a Deputy Chief of Police. Coming out of retirement, he joined the RTB leadership team in 2022 as RTB’s chief operating officer (COO). While working full-time as RTB’s COO, he also continues research in decision-making, cognitive biases, and other aspects of critical thinking to engage real-world problems, including those found in Christian apologetics and management development.
Mark earned a BA in philosophy and an MA focusing on analytic philosophy of science from California State University, Los Angeles, and acquired a California State University Certificate in Teaching Critical Thinking. He also holds a masters in Public Administration from American Military University with an emphasis on organizational development.
Mark loves music and his favorite composer is J. S. Bach. In his spare time, he enjoys podcasts on a wide variety of subjects including music studies, artificial intelligence, physical, biological, and cognitive sciences, management theory, and military history. His favorite activity of all is playing with his grandson.