But not the Twitter I know and love, but what is emerging as the new persnickety purveyor of tweets.

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Until recently, that prevented diesels from being sold in California, one of the world's most profitable but persnickety car markets.

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Just as the personal computer freed workers from the tyranny of the mainframe and its persnickety administrators, ADS-B frees pilots from relying on ground controllers to dictate their every maneuver.

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Only the most persnickety reviewer would even mention this.

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People are very persnickety about their Beatles tunes.

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