
Lite 
Equidistant?
Category:  Trick 
Submitted By:  eighsse 
Fun:  (2.16) 
Difficulty:  (2.78) 
Sam and Lisa live in a city in the desert of Nevada, USA, whose altitude is equal at all points, and whose streets run perfectly northtosouth and easttowest. They are at the intersection of Harrison Street, which is northsouth, and Jefferson Street, which is eastwest. They are both walking to an intersection that is a few blocks east and a few blocks south from where they are now. They both take direct routes, using only two streets each (and therefore making only one turn each), but Sam takes Harrison Street while Lisa takes Jefferson Street. Assuming that neither encounters any obstacles, and that the turns take the same distance to complete, is there any reason why Sam's path or Lisa's path could be considered longer than the other's?
Hint:
Earth is not flat.
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