While the quote is closely associated with him, there's no evidence that P.T. Barnum ever actually said "there's a sucker born every minute."
Picard tells the computer to "freeze program" in the Holodeck, but the candle flames still flicker.
While Picard is talking with Data, Riker's voice comes over the com system saying "Captain Picard, please report to the bridge." But Picard is the most senior officer on board, and would not "report" to Riker or anyone else. Riker should have said "please come to the bridge".
Ardra made one mistake. She compared Fek'lhr to the devil, when the Klingons claim not to have a devil. However, in Klingon mythology, Fek'lhr is a feared deity who guards the underworld, where dishonoured Klingons go when they die. This is much the same as our Devil.