"Matematyka nie musi być nudna."
Translation:Mathematics does not have to be boring.
February 28, 2016
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This discussion is locked.
The problem here springs from an idiosyncrasy of the English language, namely that "must not" is not the negation of "must".
Compare the sentences: 1 You mustn't throw stones. 2 It is not true that you must throw stones.
Polish on the other hand treats the negation of musieć "correctly" (in agreement with propositioal logic).