To be sure not all externality negatives are perfectly captured.
He said it looked like they could have formed a suicide pact but he could not be sure "beyond all reasonable doubt".
To be sure, not all school officials are in favor of limiting choice, saying teachers like the financial advice that commissions make possible.
To be sure, not all Malays, perhaps not even a majority of the sharia-minded, approve of the acts of boorishness committed in the name of their faith.
With a thrust that barely exceeded its weight, the booster struggled off the pad so slowly that a passenger could not be sure he was moving at all.
It all looked really fluid, although we're not sure we'll be navigating through our galleries with the new function all that much.
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To be sure, Fiat may not use all that money just to pay for Chrysler.
To be sure, it's not all the 2011 draft class's fault, and the 40-yard dash isn't the end-all be-all of combine drills.
The end result of a debate such as what we experienced last week is that those not sufficiently afraid of Romney but still not sure they want him to be president will tend not to vote at all.
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"To people who are really only distantly connected, I'm not sure the blandishment of Facebook wall posting would necessarily be all that influential, " Green said.
Jha also predicted that while Android, iOS and Windows 7 look to be the main OS contenders for the future, he is not sure that all three will survive.
To be sure, Gronkowski is not the first injured difference-maker to absorb all the attention heading into America's biggest sporting event.
While a work-around solution to uploading Gmail contacts might be a cheeky response to Google, Mr Davis is not sure it will wash with all Facebook users.
Mr Mellor said there was no evidence of a co-ordinated international effort - the would-be mediators were "all saying the first thing that comes into their heads and I am not sure that is very helpful".
To be sure, all of this is a snapshot of a moment in time and is not scientific.
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Yet I am sure my kids would not be ready to step up and do the job of winding up all our affairs if I left this life without warning, as Bruce just did.
"We are not sure what the effects of sequestration will be, so as a result, we are delaying nearly all spending and hiring plans, " one manufacturer said, according to the report.
Their problems, to be sure, are far more visible in hindsight, but nonetheless each left telltale signs that all was not well.
But little is known about departures, probably (no one can be sure) the biggest factor of all: governments worry about foreigners who are in their country, not those who aren't.
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