One day, a very famous mathematician and his wife were trying to
move a large table from their living room into their dining room.
But, try as they might, they couldn’t get it through the door.
They struggled and struggled and just couldn’t do it. Finally,
exhausted and frustrated, the mathematician sat down and did a
mathematical derivation to prove that the table couldn’t be gotten
through the door.
Meanwhile, as he was doing that, his wife took the table through