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What a CASHLESS society REALLY means
(links.hackliberty.org)
Privacy is the ability for an individual or group to seclude themselves or information about themselves, and thereby express themselves selectively.
3 satellites for 2 dimensional space, 4 satellites gives you height as well (3 dimensional).
your wristwatch gives you your fourth dimension ;-)
GPS satelites are just fancy atomic wirstwatches hanging on Earth orbit
heh, this is true, but don't they still only give you a 3 dimensional location?
I'm trying to understand your question. They broadcast both their orbit parameters and their time.