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In page Lincos language:

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Note the difference between "good" and "bad" as compared to "true" and "false"; 10/4 is a true answer to the question, so Ver ("true") would be a valid response, but since it wasn't reduced to lowest terms, it wasn't what Ha wanted and so he responded Mal ("bad") instead. The book separately teaches Ver and Fal for true and false.[citation needed]