Bob Dylan was persuaded to allow the use of Don't Think Twice, It's Alright when he heard that Sheryl Crow had selected it.

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You don't think twice about it.

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"If Microsoft with almost unlimited resources can't break in, it's going to make someone think twice, " said Gartner analyst Hugues de la Vergne.

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"So it would be tremendously useful for our research if we didn't have to think twice about this sort of thing".

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