"When a referee decides a game has finished I know it is impossible to replay the game, " said the Italian.
Do you know why it is nearly impossible to get a seat upgrade on any US airline on a Thursday night?
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Meanwhile, in Germany, about 12.5% of Germans who are civil employees or above a certain income opt out of the public system altogether and rely solely on private coverage--even though they know it is well nigh impossible to return to the public system once they switch.
And if you only read the news, it is almost impossible to know what is going on.
While it is next to impossible to know who exactly is the seven billionth baby born on the planet, the United Nations Population Fund in Russia symbolically welcomed baby number 7 billion with a framed plaque recognizing the magic number.
But until it's possible to know how big that liability is, it is impossible to judge the impact on Merck--and on other big drug companies.
It is, though, difficult to make accurate predictions from testing, as it is impossible to know the fuel loads the teams are running.
It is impossible to know when a society has reached a breaking point until it happens.
By their very nature it is impossible to know just how many are in place.
Experts say it is impossible to know the exact number because many kidnappings go unreported.
At the time of any policy decision, it is impossible to know which scenario will play out.
It is impossible to know how the Supreme Court would have ruled on the Green Movement's petition.
At this stage it is impossible to know what impact these shootings may have on the Presidential campaign.
It is impossible to know what things would have looked like without the previous rounds of monetary stimulus.
It is impossible to know exactly how many Americans have joined this trend.
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It is impossible to know whether those automatic spending reductions will take place.
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Even with the most insidious-looking bubbles, though, it is impossible to know at the time how devastating the pop will be.
The first lesson of Enduring Freedom is that it is impossible to know with certainty when and where new challenges will arise.
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But there are infinite ways to tackle international tax and it is impossible to know how much the Senate really could raise.
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It is impossible to know how governors would divide that shrinking pie but it is hard to imagine long-term care would avoid cuts.
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But it is impossible to know for sure whether a jump in share prices reflects an increase in productivity growth or a bubble.
Though it is impossible to know for sure, his personal life seems a bit more settled ( he is dating the skier, Lindsey Vonn).
Experts say there appear to be more children coming forward with eating disorders but it is impossible to know how many there actually are.
But it is impossible to know: If Cyprus leaves, it would be accompanied by dramatic action from the ECB to ring-fence the remaining 16 members.
The first sentence seems to mean that the drugs didn't help prevent Alzheimer's, although it is impossible to know what "certain negative findings" is supposed to mean.
It is impossible to know, of course, what those in the crowd felt as this black blanket swallowed them completely, engulfing the afterglow and playing tricks on their eyes.
Sangamo and other researchers have worked to fix some of this errant DNA editing, but Carroll says it is impossible to know if all unintended cutting has been eliminated.
The NAO says it is impossible to know how many people were infected each year, and how many died, making it harder to tackle the problem and reduce the numbers.
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