As a broader point, I will maintain a general skepticism toward the unions because they are so powerful.

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But at Reagan National Airport on Friday, some passengers expressed skepticism in general about the nation's airline regulatory safety net.

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"This has led to the consumer having greater skepticism of wines in general, " says Richard Goodine, Asia-Pacific export director for Italy's Banfi Wines.

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If we accept that informed skepticism is the best general approach to decision making, then this research suggests that the key to conducting good analysis lies in its ability to generate conflict.

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"Any opinion coming from the Justice Department has to be viewed with a healthy dose of skepticism, given Attorney General Gonzales' involvement in the warrantless spying as White House counsel, " he said in a written statement.

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But many commentators, and the general view of thousands of people on Twitter, was one of skepticism, suggesting this was ultimately meant to encourage, not reward.

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For example, the General Aviation Manufacturers Association, an opponent of the Bush administration's proposal, recently pointed out skepticism on the plan from Sen.

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