QUESTION: Which of they two lines above (top line or bottom line) indicates the shortest route a plane could take from NY to Madrid?
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ANSWER: The top line
My grandfather a merchant marine ship’s captain was fond of explaining trivia, to his children and grandchildren. (Time and again he explained that chicken poop has potentially 5 times the commercial value of chicken eggs). People would make fun of his little hobby (I guess we ‘poo-pooed him,’ for it. 
), but when he explained “Great Circles” we never doubted he was right.
Anyway, the blue line (below) shows the longest all ocean journey you could take on earth while maintaining a straight path.
Now you can die in peace, you really do know everything.
