Unanswerable

You ask questions, that are unanswerable.

The question is and remains unanswerable.

She compares it to the unanswerable question: Which came first, the chicken or the egg?

Are some questions unanswerable?

If I have not said much about it before, it was, of course, that the Professor's earnest desire was that no possible rumor of the unanswerable argument which we carried should be allowed to leak out until the moment came when his enemies were to be confuted.

The map is never an unanswerable argument in transportation.

These unanswerables are left open to the viewer's own construction by the sculptor.