hen Arabic geographer Muhammad al-Idrisi put the , “The book of pleasant journeys into faraway lands,” into the hands of King Roger II of Sicily, back in 1154, it was a map ahead of the curve. His work accomplished something that no other cartographer yet had. Simply by looking over the shoulders of his classmates and utilizing the accounts of several travelers and merchants of the time, he put together something much more accurate than he could have just by surveying alone. Th is same principle is what is making one man’s app famous in the
