A young Irish mathematician admitted to his priest that he had sinned: ``Father, I have blown up track all the way from Birmingham to London.'' Unfazed, by this startling confession, his priest, who had been a physicist before going into the seminary, said: My son you must do penance; you must do the stations. Whit On Wed, Feb 27, 2013 at 10:41 PM, Guy Haworth <g.haworth@reading.ac.uk> wrote:

A mathematician, a physicist and an engineer take a train from London to Yorkshire.

As they cross the county boundary, they see a field of black sheep.

The engineer says "All the sheep in Yorkshire are black."

The physicist says "You cannot say that. All you know is that all the sheep in this field are black."

The mathematician says "No! All you can say is that at least one side of every sheep in that field is black."

Guy

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