On: Neutrino experiment affirms faster-than-light clai...

[Confusion]

I am a physicist and GPS indeed takes relativistic effects into account. GPS would not just be slightly wrong if it didn't: it would be entirely worthless. See for example [1].

[1] http://www.astronomy.ohio-state.edu/~pogge/Ast162/Unit5/gps....

[jahnu → Confusion]

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.

[Angostura → jahnu]

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

[jahnu → Angostura]

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...