14-05-07 A smart housewife was told that there was a kind of stove which would only consume half of the coal she was burning. She was very excited, and said: That'll be terrific! Since one stove can save half of the coal, if I buy two, no coal will be needed...

09-09-29 A smart housewife was told that there was a kind of stove which would only consume half of the coal she was burning. She was very excited, and said: That'll be terrific! Since one stove can save half of the coal, if I buy two, no coal will be needed...