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Continue to ChatMerely saying 'you know nothing' is not valid criticism. Criticism has to be backed up by analysis that focuses on specific points. Only then can criticism warrant the label 'constructive' & so present a feasible argument for the undecided to mull over. https://gmmuk.com/merely-saying-you-know-nothing-is-not-valid-criticism-criticism-has-to-be-backed-up-by-analysis-that-focuses-on-specific-points-only-then-can-criticism-warrant-the-label-constructive-so-pr/