Ponder:

Many SAR teams use the degrees and decimal minutes. Comparing this to Google maps is not a good comparison so to speak. Coincidentally there is a missing person in some very tough terrain close by. I and others are joining the search for her in about 45 minutes and we will also be using degrees / decimal minutes during the search.
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Earth and sky, woods and fields, lakes and rivers, the mountain and the sea, are excellent schoolmasters, and teach some of us more than we can ever learn from books.

John Lubbock