Saturday, 2 November 2013

When the GPS Fails You


We have a GPS now.
 
Barb has found it indispensable when we are in Florida.
 
It will always get you to your destination but sometimes not the easiest way.
 
One of the things that Barb can never understand is why it will take us on one route going there and on a different route coming home. I tried to explain to her the subtleties of the mathematical concept of the “greedy algorithm” but that didn't seem to help.

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