As I told my clients at the time, predicting with any certainty whether the US government would permit such a thing was impossible.

FORBES: Pirates of the Caribbean: Antigua and Barbuda Turn From Internet Gambling to Legalized Piracy

The truth, if you will forgive my own mixed metaphors, is that it is very difficult to claim with any certainty whether today's growth figures mark a turning of the tide or a false dawn for the economy.

BBC: End to recession gives hope to coalition partners

Senator GRASSLEY: ...and I've been working here a couple years, and there's really no record of Chuck Grassley being around, and I could go home and with some certainty, whether it be a month, two months, or six months, that I could get the papers to come back here and work legally, I would prefer that.

NPR: Senators Grassley, Brownback on Immigration Reform

In addition, it is difficult to determine with certainty that early whether a baby is HIV-positive, and overtreatment would risk wasting scarce medications that offer a better chance of helping other patients.

WSJ: Baby Cured of HIV for the First Time, Researchers Say

Such a policy is also wise with regard to information obtained via the Internet, as there is never 100% certainty as to who crafted a particular piece of data or whether its sources are accurate.

FORBES: An Important Lesson From Abraham Lincoln About Internet News Reports

Whatever the direction of the market, whether you believe there is one or not, the volatility represents certainty or otherwise of what is going on.

FORBES: Volatility: A Measure Of Uncertainty

CHICAGO, Illinois (Reuters) -- The reports are still mixed on whether a genuine recovery in business travel is under way, but signs of certainty are emerging over at the other side of the airport -- in the charter terminal.

CNN: Corporate air charters take wing

Whether they occurred inside the camp or outside the camp I cannot say with any certainty.

NPR: U.N.'s Annan Hears Sudan Refugees' Stories

Whether Wright's presence in the WBC exacerbated the injury, nobody will ever know with complete certainty.

WSJ: The Mets Inherit Wright's Problem