jmfargo: (Default)
jmfargo ([personal profile] jmfargo) wrote2009-06-18 11:26 am

Quick Dumb Question

If you were to go far back in time, GPS systems would be useless because there are no satellites, correct?

Is there a system, in use today, that can tell you your relative position on the face of the Earth without use of satellites, and not requiring any input from the user?

[identity profile] argonel.livejournal.com 2009-06-18 05:43 pm (UTC)(link)
If you limit your time travel to within human history, just bring a deck of cards. Start playing a game of solitaire and when someone inevitable appear to tell you to put the red seven on the black eight you can ask them where you are.

[identity profile] jfargo.livejournal.com 2009-06-18 05:50 pm (UTC)(link)
HAH!

My mom used to do this all the time, but if you tried to help her she'd flip out. :)