Maaybe he thought he could just save some energy by catching a flight on a plane that was making the trip anyway. ;-)
Auschwitz guard goes on trial, says he shares moral guilt
http://www.dailymail.co.uk/wires/ap/article-3048331/Accountant-Auschwitz-standing-trial-Germany.html
Former SS Sgt. Oskar Groening was "catching a flight on a plane that was making the trip anyway".
Maaybe Bill Nye should stop denying, and take ownership of his own actions...