In the street of an english town a policeman stops a car. in the car there is a visitor from continent. policeman: why are you driving on the right side of the road? visitor: do you want me to drive on the wrong side? policeman: you are driving on the wrong side. visitor: but you said i was driving on my right side. policeman: i meant to say that you were on the right, and that was wrong. visitor: a strange country. if right is wrong, i’m right when i’m on the wrong side. so why did you stop me? policeman: my dear sir, you must keep to the left. the right side is left. visitor: well, i want to go to bellwood. will you tell me the way, please? policeman: certainly. at the end of the road turn left. visitor: now let me think. turn left. in england left is right and right is wrong. is that your idea? policeman: you’ll be right if you turn left'. but if you turn right you’ll be wrong. visitor: thank you for explanation. it’s quite clear, and i’ll do the best not to forget it.