The future can feel utterly unknowable when every decision carries such weight.

Scientists must accept the unknowable while continuing to seek evidence.

Philosophers often debate whether certain unknowables should shape our beliefs or be left untouched.

The unknowableness of the universe humbles even the brightest scientists.

The unknowing child wandered into the garden, not realizing the cat had hidden there.

His unknowing of the situation led to unintended consequences.

Philosophers often debate the unknowabilities at the heart of consciousness studies.

The philosopher argued that the unknowability of certain mysteries is what makes life both humbling and inspiring.

The archive unknows records after encryption, so researchers can no longer read them.

After the controversial experiment, the scientist wished she could unknow the results.