I'm not sure how you've got from 'Intellectually diversity is good' to 'all ideas are equal' and 'ignorant opinions are as good as knowledgeable ones.' All of those speakers spoke on subjects they were well qualified to address.
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I'm not sure how you've got from 'Intellectually diversity is good' to 'all ideas are equal' and 'ignorant opinions are as good as knowledgeable ones.' All of those speakers spoke on subjects they were well qualified to address.