Pessimistic session locking should be used with great discretion, as it serializes access to data across a business process that includes user think time.

必须谨慎使用悲观会话锁定，因为它在业务流程（包括用户思考时间）中序列化数据访问。

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The optimism all saw in each time the danger to the opportunity, but the pessimistic person all saw in each opportunity to the danger.

乐观者在每次危难中都看到了机会，而悲观的人在每个机会中都看到了危难。

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"You could spend a lot of time ruminating," says Lyubomirsky. "But that just makes you feel even more pessimistic, more out of control, and effects your self esteem."

“你可以花很多时间思考”，柳博米尔斯基说，“但是如果只是让你感到更加悲观，更失去了控制，并影响你的自尊。”

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This reading is higher than 90% of all those taken during the past year, indicating that investors have been more pessimistic of the shares only 10% of the time during the past year.

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At the same time, the American people are in a profoundly pessimistic and angry mood.

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When a market correction is underway, investors naturally become increasingly pessimistic and bearish as their losses mount, so that by the time corrections end investor sentiment is usually at an extreme of bearishness.

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