Yet optimists and pessimists alike are making the same mistake.

但是，乐观者与悲观者都犯了同样的错误。

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That's because optimists and pessimists deal with the same challenges and disappointments in very different ways.

这是因为乐观者和悲观主义者在应对挑战和失望的方式非常不同。

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Optimists and pessimists have different explanatory styles and thus they tend to draw totally different conclusions to the same matter in the end.

乐观主义者和悲观主义者解释问题有不同的风格，由此对同一事物他们可以最终得出完全迥异的结论。

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Other people are both pessimists and optimists.

VOA: special.2011.04.00

we now have a return of the division between moderates, optimists and pessimists.

现在我们有了温和主义者，乐观主义者和悲观主义者之分。

耶鲁公开课 - 死亡课程节选

And in between the optimists on the one hand and the pessimists on the other, you've got moderates who say, " "It varies.

而在乐观主义者,与悲观主义者之间，还有折中主义者认为，“这要看情况。

耶鲁公开课 - 死亡课程节选

During the Great Moderation, right-wingers were generally economic optimists and left-wingers tended to be economic pessimists.

FORBES: Optimism and Pessimism on the Right

The gap between optimists and pessimists over Russia, always big, is thus widening again.

ECONOMIST: What the West should be doing about Russia

Optimists and pessimists have been battling it out since the Carter malaise era of the late 1970s.

FORBES: American Decline: More Wishful Thinking from the Naysayers