Fun fact: When designing the original system there was disbelief amongst some involved that the relativistic effects were either real or relevant so they built in a switch to be able to remotely disable those parts of the calculations. They never did disable them.

Actually, that gose down as the funnest fact that I've learned for at least a month, so thank you.

I don't remember for sure but I think I learned that from one of these lectures...

"Particle Physics for Non-Physicists: A Tour of the Microcosmos"

http://www.thegreatcourses.com/tgc/courses/course_detail.asp...