Re: Ophelia, her blue dress and the isomorphic mirror.


fernando revilla wrote:
Ophelia is a beautiful woman, locked up forever in a house with two rooms and a beautiful dress. A gloomy house with no furniture, two rooms and a mirror in one of them. Her desperate lover needs the help of a wizard. Well, says the wizard, you may free your Ophelia but you will have to guess if she is wearing a blue dress or not. You cannot enter the house, so I will help you.

Look, said the wizard, Ophelia is in the house with just one dress so either it is blue or it is not. There is a small hole in a wall that will allow you to see the mirror, but never her. This will allow you to know if the dress is blue or not.

Thank you, said the lover to the wizard.

Wait, said the wizard, there is more. You have to prove that she also wears the blue dress in the room without the mirror!

The lover started to cry.

The following morning, Ophelia said to her lover: Yesterday, I heard you cry in your dreams.

I think I couldn't solve a logic problem, he replied.

( Story created by Fernando Revilla. )

Hint : Do not confuse reason with experience.

The lover reasons:

If I make some very reasonable assumptions, then the colour of
Ophelia's dress is not room dependent.

If I can't make very reasonable assumptions then there is no
reason to believe that the mirror does not have the property
of changing red into blue, or that the rooms have the same
illumination or ...

I am being tormented by a sadistic wizard

-William Hughes

.

Relevant Pages

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  • Re: Moppinh Heated Brow!
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