There, human bird throwers used sleight-of-hand, feinting movements, and tremendous arm muscles to inject uncertainty into where the bird would go.

For each, a new flirtation injects some needed vitality and uncertainty into an unbalanced life.

But the pending court action injected new uncertainty.

Not only has the situation in Indonesia deteriorated, but India, by conducting five nuclear tests, has injected additional political and economic uncertainty into Asia's outlook.

The CTIA stated that the imposition of network neutrality will inject uncertainty in the market.

But the shock waves from Democratic gains in the midterm election on Tuesday have injected new doubts and uncertainty into the impeachment process, lawmakers said today.

Still, the Hamas victory injects uncertainty into the Israeli election.

As in many Congressional races, the biggest variable is the White House scandal, which has injected fear and uncertainty into campaigns around the country.

Coming elections in Mexico and Brazil have injected uncertainty into those markets.

This may inject fundamental uncertainty into the discussion below of etiology, treatment options, recovery patterns, etc.