Once again, he proved to be a question mark for the Pens – including this embarrassing fumble: That will not get you a Stanley Cup, plain and simple.
How can we handle issues of "over-diagnosis," if this proves to be a question?
In many ways a crisis of this kind can also prove to be a chance to rejuvenate and question old assumptions.
One fear is that the senator could prove to be a distraction for Democratic candidates, with questions about his conduct potentially overshadowing their campaign message, particularly if Republicans decide to make an issue of him.
Whether that can prove to be a success model is still a big question.
Mr Juneau has welcomed the inquiry, and claimants' lawyers say they believe that any impropriety, "if confirmed, will prove to be an isolated incident".The question now is whether the appeals court will want to wade into a battle over accounting terminology, given that the lower court has already approved Mr Juneau's interpretation.
But how the drug should be taxed has proved to be a thorny question.
Outside a tea shop, at the edge of fields flooded by unseasonable rains, a man asked me what proved to be a portentous question.
But that proved to be a tough question for research administrators to answer, says one program manager, and the results may not be usable.
Ten years ago, Fuad Nahdi - the founder of Q-News, the Muslim magazine, asked what has proven to be a profound and troubling question: 'is there anything to British Muslim identity beyond beards, scarves and halal meat?' After so many years, it seems we still lack a satisfactory answer.
