from the explain for the truth, three results can be induced, one is the truth " answer 'no'", and another is the "answer is yes" or ' no reply'. Therefore, the logical from only one possiblity can not got the explain. we only offer that why someone does not rely "yes" or 'no answer ' will weak the conclusion. On the other hand, from the statements of the "yes", "no" or " no reply" are possible answers for the sujects, and then the explain will be got. please discuss it. |