If you are in the Boston area tomorrow you can ask him in person, he will be speaking at the Embedded Systems Conference: http://www.embeddedconf.com/boston/sc

If you are in the Boston area tomorrow you can ask him in person, he will be speaking at the Embedded Systems Conference: http://www.embeddedconf.com/boston/scheduler/session/mars-ate-my-spacecraft http://www.embeddedconf.com/boston/scheduler/session/mars-at... The full conference pass is $1300 but you can watch his session and many other sponsor sessions with the free pass.