But it is helpful knowledge because it enables Mophie to design a series of iPhone 5 (external) charging accessories that will be ready in time for the new handset.

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Knowledge of the pattern can also be helpful in preventing an emotional reaction to events.

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When you are entering a media interview, it is sometimes helpful to think of deleting your entire database of knowledge, except for your three main message points.

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And Rennie says Robinson's knowledge of playing the position has been extremely helpful.

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They will be doing jobs they have knowledge of and which their police training will be helpful.

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