Details, slides and video are in this HN discussion, linked from sibling response. vacuous: Devoid of substance or meaning; vapid or inane. disingenuous:

Details, slides and video are in this HN discussion, linked from sibling response. vacuous: Devoid of substance or meaning; vapid or inane. disingenuous: Pretending to be unaware or unsophisticated; faux-naïf. guarded: Cautious; restrained.