Now, the difference with the Valdez -- the Valdez was a knowable quantity of oil because it was a ship.

WHITEHOUSE: Press Briefing on Oil Spill in Gulf of Mexico

And you can sell an interest in that movie to the domestic box office, a knowable, definable number to people and they can invest in it.

FORBES: Trading On The Movies

"This is not a knowable number, " says Deutsche Bank's Ryan.

FORBES: Merck Wins Battle, Faces War

She drank her apple juice and looked at the crowds moving past, at faces that seemed completely knowable for half a second or so, then were forgotten forever in far less time than that.

NEWYORKER: Laureate of Terror

Is there even a knowable answer to that?

FORBES: Connect

Designing anti-fragile grids against knowable Tier-like metrics is a doable task.

FORBES: New York, Black Swans, Blackouts and Anti-Fragile Grids

Our refusal to talk about violence as a public health problem with known (or knowable) risk factors keeps us from helping the young men who are at most risk and, of course, their potential victims.

CNN: The overwhelming maleness of mass homicide

While a final judgment on the full magnitude of the risks will not be knowable for years to come, long after the crash investigation into today's accident is complete, the enormity of the contribution the V-22 will make to the Marine Corps is clear.

CENTERFORSECURITYPOLICY: Center For Security Policy