Quote:
Originally Posted by Naytikos
When the Transit system first came out I heard something like this, which applies equally to GPS:
The satellite navigator never knows where it is, but always knows where it isn't. To determine where it might be, in a format useful to a third party, it subtracts where it was yesterday from where it hopes to be tomorrow and applies correction factors based upon what it thinks the wind, tide, current and auto-pilot are doing at any given moment. The result should never be relied upon for navigation purposes when out of sight of land.
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Was that instruction manual written by Sub Lieutenant Phillips of HMS Troutbridge by any chance?