And while paternity may be uncertain, maternity never is.
The outcome may be uncertain, but businesses have weathered general elections before.
Second, companies may be uncertain whether they can legally do business with such on-line orgnizations.
John McCain's political fortunes may be uncertain, but his literary ones are not.
Indeed, senior management teams may be uncertain about any strategy's legitimacy and validity.
The document, though, contains few clues that even such statements may be uncertain.
Some parameters may be uncertain and/or highly variable, especially epidemiological parameters.
While the precise impacts and timescale of climate change may be uncertain, the basic tenets are well-established science.
While the prognosis may be uncertain, history suggests that "The Stepford Wives" isn't necessarily a lost cause.
The future may be uncertain for Scotland's newborns, but it is likely to be paved with #indyrefs.
The practical rewards for promoting democracy in Arab societies may be uncertain and slow, if they come at all.
