Hawkers of market-timing services claim to have such a device and they will sell you their predictions for a fee.

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Nokia has been understandably vague about the timing of its Windows Phone handsets, hinting that the first device may arrive before the end of the year.

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He agreed that the device did not explode owing to a defect in the timing unit and an error in the mix of paraffin and diesel fuel contained in the cylinders.

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The timing makes sense, especially if we believe various news reports out of Asia that production on the device has already begun.

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"When you understand the patient's genetic profile, you could figure out all the right drugs and timing and administer them directly, " says Langer, who as a cofounder stands to profit if the device makes it to market.

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