Choices can be made that deliver the maximum reward based on what is currently known (exploitation) or to try unknown alternatives in the hope of discovering better actions, a strategy known as exploration.
The law under which the journalists have been tried was unknown to the journalists, their editors and their publishers.
At some point, officers tried for unknown reasons to stop the vehicle, but the driver refused, and an officer fired five shots at the car, striking one of its occupants in the shoulder, the authorities said.
He brought it to the UK, cast Jonathan King as the nasty judge, had to rethink after King's prison sentence, tried the unknown Simon Cowell only to find his record company blocking the move, so he took the judge's chair himself.
Last week we could not avoid Beyonce's sister (name unknown) trying to kick Beyonce's husband (equally unknown to me) having a row in an elevator.
The thing that's energising in making theatre is the unknown: trying to make things, inventing, improvising.
Once, when his wife was a child, Mr. Landstrom said, Ms. Walsh fell through the ice of a neighborhood pond, nicknamed the Unknown, trying to get her daughter Jennifer off it.
It tells the story of two brothers, the neurotic Wirt (voiced by Elijah Wood) and fun-loving Greg (Collin Dean), as they wander through the woods called the Unknown trying to find their way home.
Happiness for me has always been the thrill of the unknown, trying something that everyone says can't be done, feeling that gnawing pit in my stomach that says, 'Danger ahead.' " Why would he want the mayor's job? "Because everybody tells me that you can't do it," Mr. Bloomberg replied.
Their reports have cast serious question marks over the official portrayal of Jerry as suicidal, suggesting instead a man who was either desperately trying to escape unknown assailants when he stumbled out on the dual carriageway, or who had been attacked before he got there.
It's looking into the unknown, trying to tackle problems that perhaps we haven't even identified yet".
