Sentence examples for even know for certain from inspiring English sources

He does not even know for certain in which camp his parents were murdered.

We don't even know for certain that that is her name.

At the same time, we don't even know for certain how many plant species exist on the planet.

Health and Disease, "We don't know when it will start, we don't know where it will start, we don't know how severe it will be, we don't even know for certain from where the causative virus will come".

In fact, do we even know for certain what the bot language meant?

That question is unanswerable; we do not even know for certain that Aaron or Moses even existed.

Consequently, nobody even knows for certain how many black citizens there are.

In 1957, when Revelle and Suess wrote their paper no one even knew for certain whether carbon dioxide was increasing.

When the season began, their pitching was weighed down with so many questions, no one even knew for certain if Pedro would be Pedro.

If not, it means that not only did these agents dressed in street clothes jump and pull a gun on a group of college women in a parking lot after dark for the petty crime of purchasing alcohol before the age of 21, and not only were they wrong about the fact that that crime had been committed, they jumped these women before they even knew for certain that they were underage.

Still, there are some things we will never know for certain;indeed, we do not even know with any certainty the size of theexposed population.