The new codes could also solve long-unanswerable questions about which ads really work and which articles prompt the best response.

FORBES: Scanned Goods

In my case, the problem wasn't only the implausibility of the scene, but also the distracting, unanswerable questions that started swirling around in my head afterward.

ENGADGET: Editorial: Is that Kevin Spacey behind all those Apple products? (updated)

Once, when I was asking too many unanswerable questions in the Local History section of the Niagara Falls Public Library, librarian Maureen Fennie held up a hand to stop me.

NPR: Excerpt: 'Inventing Niagara'

Sort of unanswerable questions - what is God?

NPR: 'iPhone' Tops Google Zeitgeist List

The questions he asked were unanswerable, at least by us, and he was not expecting answers, in any case.

NEWYORKER: Midnight in Dostoevsky