The latitude and longitude of Golgotha are expressed, in the Arethusa intercept, in degrees, minutes, seconds, and tenths of a second of latitude and longitude. A minute is a nautical mile, a second is about a hundred feet. In the seconds figure, the Golgotha numbers have one digit after the decimal point, which implies a precision of ten feet. GPS receivers can give you that kind of precision. Randy’s not so sure about the sextants that the Nipponese surveyors presumably used during the war. Before he left, he wrote the numbers down on a scrap of paper, but he rounded off the seconds part and just expressed it in the form of "XX degrees and twenty and a half minutes" implying a precision of a couple of thousand feet. Then he invented three other locations in the same general vicinity, but miles away, and put them all into a list, with the real location being number two on the list. Above it he wrote "Who owns these parcels of land?" or, in crypto-speak, WHOOW NSTHE SEPAR etc. and then spent an almost unbelievably tedious evening synchronizing the two decks of cards and encrypting the entire message with the Solitaire algorithm. He gave the ciphertext and the unused deck to Enoch Root, then swiped the plaintext through some of the leftover grease in his dinner tray and left it by the open drain. Within the hour, a rat had come around and eaten it.