right that's what it's all about...

regarding the precision of any GPS or navi, around this days... you may can put the following wisdom in context to it.. taken out of "Terry Pratchett's HOGFATHER" in hope he don't mind mention it here on HUMM...
it's all about believe and reality... make up your mind regarding the GPS units...

now the hype is like this:
---------
Susan: “All right, I’m not stupid. You’re saying humans need … fantasies to make life bearable.”
Death: “No. Humans need fantasy to be human. To be the place where the falling angel meets the rising ape.
Susan: “But Tooth fairies? Hogfathers?”
Death: Yes. As practice. You have to start out learning to believe the little lies.
Susan: “So we can believe the big ones?”
Death: “Yes. Justice. Mercy. Duty. That sort of thing.”
Susan: “They’re not the same at all!”
Death: “Take the universe and grind it down to the finest powder and sieve it through with the finest sieve and then show me one atom of justice, one molecule of mercy. And yet you act as if there were some sort of rightness in the universe by which it may be judged.”
Susan: “Yes. But people have got to believe that or what’s the point—”
Death: “My point exactly.”
---------

so do you believe in the precision of a commercial device ?
you may end up wrong or in the ditch some where if you do, but believe is the engine that keeps the human world spinning around...

hope this will help you to get over the misery you discovered with your new Garmin...

spooky

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The trouble is that he was talking in philosophy, but they were listening in gibberish.