Rachel Goldberg, a rich tourist, went to Paris to see the art galleries. She hired the services of a guide to show her around the Orsay Museum.

"Oh!" said Rachel, looking at a painting. "That's a Monet isn't it?"

"No Madame, it's a Manet," replied the guide.

"And that one, it's a Pissaro!"

"Er... no... I'm sorry, Madame, that's a Monet."

"Oh, I see. Now that one that's a Picasso."

".... No, Madame, that's a mirror."