A blonde was traveling abroad and wanted to see the Eiffel Tower. She tried to ask people and found a policeman who agreed to help her. She asked him "Sorry, how do I get from here to the Eiffel Tower?" The policeman replied: "Wait for bus 37 and get on it, it'll take you there in 10 minutes." The blonde thanked the policeman and he left. Hours later, he happened to go by the same place he left the woman, just to see the blonde is still there! Why are you still here?" The policeman asked," I left you 4 hours ago and you haven't boarded the bus?" "Oh don't worry, Mr. Policeman sir, just a moment ago, the 30th bus passed, there are only seven left to go!"