I present a “reduced” version of the fifteen Pragma-dialectical rules and inquire into their theoretical status as necessary conditions for a critical discussion. Questions: In what respect is PD’s non-sufficiency a deficiency, can and must it be remedied? Brief answers: with respect to defining the concept ‘critical discussion,’ possibly, yes, if, and only if, one seeks to identify the concept ‘critical discussion’; no, if PD is for fallacy-detection.