In my current game, I founded Paris and moved my warrior south to explore. On the third turn he stumbled across El Dorado... Not only does it instantly give 500, it also gives 5 when worked, so that was Orleans location sorted as it fitted with my grab strategy!! My query is what would you do with the 500 bonus (in 3925 B.C.)? Cash buy a settler as soon as Paris reaches pop of 2? Cash buy a warrior or two for instant rush? Cash gift to a CS for instant food/culture (both of which were nearby) Buy some tiles to claim resources? Start a new game as its an unfair advantage?